...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
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| Number | Title | Issue Date |
| 7309233 | System and method of teaching and learning mathematics Numero Cubes and the Whole Number System are disclosed. In one embodiment, the system may comprise cubes, pegs, magnets, dividers, shafts, and a number placement panel. The shafts may comprise individual marks representing the base ten number system. The system may ... | 12/18/2007 |
| 7247076 | Pulse width modulation drive and method for ornaments with movable components A decoration device may include a low-friction drive line and a PWM controlled motor that reduces or eliminates the gearing needed to achieve appropriate speed and torque at the motor output shaft. In preferred embodiments, the decoration device is an ornament that ... | 07/24/2007 |
| 7222466 | Foldable support structure with hinged sawtooth wall members A foldable truss member suitable for commercial displays includes a plurality of side members that are adjacently hinged together. The side members include support members and bridging members having extensions. The side members are joined into a foldable structure ... | 05/29/2007 |
| 7175498 | Combination toy building block and container for holding liquids and the like A combination toy building block and container for holding liquids and the like, wherein the functional configuration of the device permits both the carrying of a dispensable substance and the stacking of multiple containers, thereby enabling the imaginative play co... | 02/13/2007 |
| 7101247 | Jelly blocks and jelly letters Jelly blocks and jelly letters are disclosed. The jelly blocks and jelly letters may be made from an elastomer gel resulting in a soft, stretchable children's toy that has shape memory. The jelly blocks and jelly letters may be made from an elastomer gel that is for... | 09/05/2006 |
| 6955513 | Flexible fastener This invention relates generally to a flexible fastener for coupling members. In a preferred embodiment, the flexible fastener may be used to couple members that are non-parallel, non-aligned, or in specific instances when selective compliance in a member is desired... | 10/18/2005 |
| 6790118 | Block set for educational purposes The object of this invention is to provide a block set for educational purposes. The block set features that a plurality of block units of the same color are integrated so as to build a block bar, and two or more block bars respectively of different colors are cross... | 09/14/2004 |
| 6715255 | Foldable support structure with hinged sawtooth wall members and rigid end cap A foldable truss member suitable for commercial displays includes a plurality of side members that are adjacently hinged together. The side members include support members and bridging members having extensions. The side members are joined into a foldable structure ... | 04/06/2004 |
| 6659463 | Interconnecting miniature toy figurine bases with record tracking system Gaming equipment for a variety of games has buildable structures formed of building blocks, movement measurement devices for measuring game piece movement and projectile range values, structural unit guides to aid in construction of the buildable structur... | 12/09/2003 |
| 6447360 | Interconnection of toy building elements in a releasable restraining engagement A building element for a set of toy building elements that are capable of being interconnected in a releasable engagement includes side walls having grooves and tongues, a top having a broad surface that extends toward the side walls and a primarily cylin... | 09/10/2002 |
| 6386936 | Building block set A block set including a first block having a first and second cubic recess, the first and second cubic recess being diagonally opposed and the convergence points of the first and second cubic recesses being located along a common axis which is arranged a ... | 05/14/2002 |
| 6315628 | System of elements for the composition of static or dynamic constructions A system of elements of plastic material intended for the composition, by frictional insertion, of static or dynamic constructions having a game of didactic purpose, which comprises two kinds of main system elements, from which the first kind of elements ... | 11/13/2001 |
| 6293800 | Educational and entertainment device An educational and entertainment device includes n layers stackable in a predetermined order one on top of the other to define a tower having n layers. The xth layer, where x varies between 1 and n, is divided into x sections, at least one of the x sectio... | 09/25/2001 |
| 6224453 | Modular building blocks with color coding A color coded set of building blocks including a plurality of nesting blocks with diamond cross sections and at least one octahedron cap block. The blocks in each set are progressively sized so that when the individual blocks are stacked, they nest within... | 05/01/2001 |
| 6220919 | Assembled building block for forming various geometrical shapes with corners having angles 60 degrees, 90 degrees and 120 degrees An assembled building block formed by nineteen unit assemblies and a plurality of round holes for forming various geometrical shapes with corners of angles 60 degrees, 90 degrees and 120 degrees. The unit assemblies are formed by 1 and 3 to 6 small units ... | 04/24/2001 |
| 6190228 | Toddler toy system and method An educational and recreational toy system for toddlers including a plurality of toy components having various shapes and sizes. The various shapes and sizes of the components are based upon a unit measurement. Toy structures are provided, including a bal... | 02/20/2001 |
| 6186856 | Toy of equilateral triangular building blocks The present invention concerns a building block toy, characterized in that a single kind of building block is used and in that the building block is of a unique shape. Specifically, the center of a flat equilateral triangular piece and the center of a fla... | 02/13/2001 |
| 6012185 | Blocks for elevating bed legs A pair of stackable, nestable blocks for elevating the leg of a bed to a plurality of selectable heights employs first and second blocks that each have upper and lower ends, with recesses being provided in at least one of the ends of each block that can b... | 01/11/2000 |
| 5830032 | Architectural blocks A set of novel architectural design blocks is disclosed. The design blocks may be used for education, instruction, and design purposes. Generally, the blocks contain a post member positioned in a generally upright position. Also, a beam member cooperating... | 11/03/1998 |
| 5810357 | Stackable three-dimension toy assembly A three-dimension skill-development toy for small children is provided with a molded core element and a series of planar elements that may be stacked on the molded core element only by pattern matching and in one particular sequence to form a resulting fa... | 09/22/1998 |
| 5795210 | Toy building set and building elements therefor A toy building set has building elements which can be interconnected in a releasable frictional engagement. The building set comprises building elements having a first type of coupling means arranged in a two-dimensional modular pattern, and building elem... | 08/18/1998 |
| 5782667 | Sculpture amusement device A sculpture amusement device includes a plurality of elements which are adapted be arranged into a plurality of two- and three-dimensional sculptures. The device includes a first stack of interior elements and a second stack of exterior elements. Each int... | 07/21/1998 |
| 5735723 | Toy blocks having natural shapes A set of blocks cut from the limbs and trunks of small trees is shown for making natural appearing stacks (20, 60). Each block has parallel upper and lower cuts (82, 84, 170, 171) across the blocks spaced a predetermined increment "I" or a multiple of inc... | 04/07/1998 |
| 5700177 | Stacked components assembly toy An assembly toy is provided for constructing a three-dimensional composite object as defined by the successive edges of a plurality planar members stacked upon one another in a particular order. An axial structure such as a pair of rods is mounted to a ba... | 12/23/1997 |
| 5474483 | Wheeled toy container with surface to attach blocks A multifunctional toy container including a hollow container body shaped like a motor vehicle and supported on wheels for keeping toy blocks, a handle fastened to the rear side of the container body for moving the container body on the ground by hand, and... | 12/12/1995 |
| 5460561 | Toy kit of stackable geometric shape pieces to form a structure A toy kit for forming a structure. Individual pieces include at least a cylinder, cone, cube and prism, and at least one additional piece. The piece can be assembled to form a structure, e.g. a sand castle. The pieces are hollow and open bottomed and incl... | 10/24/1995 |
| 5401200 | Baby bottles formed of separable segments adapted to educate and entertain a child during feeding A baby bottle formed of separable segments each adapted to educate and entertain a child during feeding comprising a plurality of hollow, generally cube-shaped blocks matable together to form a baby bottle, each of the blocks having four generally; the bl... | 03/28/1995 |
| 5354224 | Block toy including a plurality of blocks that can be variously assembled to create different graphical images and including apertured blocks having engagement surfaces which extend from edges of the apertures into the blocks A block toy has a plurality of regular hexahedral blocks each having a relief side having a relief surface, a printed side having a printed surface, and an apertured side having an aperture defined therein. A plurality of smaller blocks, which have sizes ... | 10/11/1994 |
| 5238407 | Blocks with mating bosses and recesses which bulge for interference fit Base-ten blocks for teaching arithmetic to children, in which each block (19) has a projecting boss (27) with curved (bowed-out) sides (29) and an aperture (33) with straight sides (35), so that blocks (19) can be securely joined together to form multiple... | 08/24/1993 |
| 5176577 | Rectangular blocks for teaching arithmetic have uniform size joinability and transparency Base-ten blocks for teaching arithmetic to children, in which each block (19) has a projecting boss (27) with curved (bowed-out) sides (29) and an aperture (33) with straight sides (35), so that blocks (19) can be securely joined together to form multiple... | 01/05/1993 |
| 5169352 | System of structural form bodies A system of form bodies for use as a toy building blocks, decorative objects, in particular for display use, furniture structures, sculptural building components etc., wherein each form body has the shape of a polyhedron, in which polygonal side faces wit... | 12/08/1992 |
| 5145177 | Stacking piece puzzle A stacking puzzle including a plurality of stackable, game pieces and one or more solid game rods. Each of the game pieces includes an aperture extending obliquely therethrough. When the game pieces are properly stacked and oriented relative to one anothe... | 09/08/1992 |
| 5104345 | Toy construction set formed from plural building blocks A construction toy configured as a humanoid figurine formed from: a torso having a front wall and a rear wall, a head area, downwardly extending legs and outwardly extending arms. The torso and its front and rear walls provide first and second attachment ... | 04/14/1992 |
| 5022885 | Toy construction set featuring radiating face and complementary edge connectors A construction toy formed from a plurality of building blocks. Each building block is formed with a multiplicity of facets defining the exterior and each facet is provided with structure for attachment to another facet. Some facets are embodied as includi... | 06/11/1991 |
| 4986789 | Shape identification toy vehicle assembly A toy vehicle constructed as a shape identification toy, wherein the toy vehicle comprises a plurality of components which interconnect due to a shaped member being provided on one of the plurality of components co-operating with a corresponding shaped me... | 01/22/1991 |
| 4950912 | Multi-segment play apparatus A method of playing a board game, where the game comprises a play surface and multi-segmented playing pieces representing characters adapted to stand upright on the surface. Each character is comprised of a stack of segments. By progressively removing seg... | 08/21/1990 |
| 4902259 | Connectable polygonal construction modules Polygonal construction modules are capable of being connected together by their edges and by their faces to create many different three-dimensional shapes. Each module has a generally planar body with edge faces, a top face and a bottom. Each edge face ha... | 02/20/1990 |
| 4826076 | Device for the support of driving tracks for toy vehicles A device for the support of driving tracks for toy vehicles, in particular driving tracks consisting of track segments which are plugged together and which have a center section laterally bounded by guiding elements. The center section of each track segme... | 05/02/1989 |
| 4820234 | Doll having a plurality of wheels with varying facial expressions to effect mood changes A novelty doll is comprised of a plurality of independent and exchangeable facial segments which are built upon a post to create a doll face, each facial segment including a plurality of expressions selectively and separately placed into view whereby a va... | 04/11/1989 |
| 4789369 | Toy building blocks with multiple pivoting interconnections A toy building block construction includes a lower portion having a generally rectangular solid configuration and an integral upper portion extending therefrom. Extending outwardly from one end of the lower portion are two pair of hinge arms, each pair of... | 12/06/1988 |