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"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 7227558 | Apparatus and method for sorting line break numbers for line break locations within series of figures The object of the present invention is to assign line break numbers to locations where line breaks have been made in order to separate a series of figures configured by connecting a number of figures into parts in a manner which makes it easy for a user to view a dr... | 06/05/2007 |
| 6702586 | Teaching puzzle A teaching puzzle comprises a book in combination with a game board. The book includes a plurality of pages, each page having a written passage printed thereon and a respective puzzle piece removably attached thereto. Each puzzle piece has front and back ... | 03/09/2004 |
| 6213465 | Entertainment kit An entertainment kit including a colored jigsaw puzzle which consists of a colored drawing mounted on a first substrate which is cut into jigsaw puzzle pieces. The kit also includes an uncolored jigsaw puzzle which is a line drawing mounted on a second su... | 04/10/2001 |
| 5820383 | Magnetic manipulatives book A book having at least one fold out page with a metal insert which assists the placement or arrangement of magnetic manipulatives onto a page of the book.... | 10/13/1998 |
| 5743741 | Math jigsaw puzzle An educational jigsaw puzzle (20) in accordance with a first embodiment of the invention including a plurality of substantially flat components (22) having various beginning members (23, 24). Beginning mathematical expressions (26, 27) located on componen... | 04/28/1998 |
| 5720481 | Educational puzzle toy set An educational toy puzzle set having separate interconnecting puzzle pieces each shaped as the silhouette or outline of an animal, plant, or toy with one side including a word description or name of the animal or plant, which can be used as a play item in... | 02/24/1998 |
| 5683251 | System and method for tracking dietary consumption The invention is a device for teaching children about good nutrition, comprising a board divided into a plurality of regions and a plurality of tokens adapted to stick to the board. The tokens comprise at least: a) a plurality of first tokens, each of the firs... | 11/04/1997 |
| 5643084 | Moving video jigsaw puzzle A computer-generated jigsaw puzzle game including a method of generating a jigsaw puzzle game on an electronic display and controlling the play of the game in response to play operations. The method includes the steps of displaying a jigsaw puzzle compris... | 07/01/1997 |
| 5575658 | Puzzle forming an assembly of characters and a method for forming the puzzle An assembly is provided having at least two sets of pieces representing characters of a known set. The pieces may be connected to form an assembled puzzle of the pieces wherein the completed assembled puzzle arranges the puzzle pieces in a known order for... | 11/19/1996 |
| 5573246 | Building block-jigsaw puzzle This invention relates to a building block-jigsaw puzzle which is composed of a plurality layer of building blocks and a case, each layer of.: building blocks being composed of a plurality of divided building blocks which can be combined to form a picture... | 11/12/1996 |
| 5296845 | Computer keyboard for use with software for playing games or solving puzzles A computer system having a computer keyboard for use with software for playing games or solving puzzles is disclosed, which includes software for playing a puzzle game, a central processing unit for processing the software, a monitor for the display of in... | 03/22/1994 |
| 5269524 | Game board with support mechanism A folding magnetic, reusable, game board, useful as a puzzle board and in combination with a jigsaw puzzle and associated instructional puzzle placard, having first and second foldable components and a non-foldable component, a magnetic playing surface fo... | 12/14/1993 |
| 5213507 | Instructional child's story and picture book The present invention is an instructional child's story and picture book including a front cover, a back cover, and a plurality of pages pivotally disposed between the front and back covers. At least one of the pages includes text on one or more sides and... | 05/25/1993 |
| 5149098 | Jigsaw puzzle game board having corresponding indicia There is disclosed herein a game using jigsaw puzzle like game boards but wherein each game piece in the form of a jigsaw puzzle piece and the underlying board both have matching letter and number identifications facilitating locating where the game piece... | 09/22/1992 |
| 4961708 | Educational puzzle An educational puzzle includes a base panel and a set of puzzle pieces. The base panel has a number of holes through it, while the puzzle pieces have mating pegs extending through them, to both sides. The arrangement is such that the puzzle pieces can be ... | 10/09/1990 |
| 4937181 | Educational display system An educational visual display system for teaching geography in which objects having some geographical or topographical significance, e.g., states of the Union, may be detachably affixed and arranged to demonstrate relationship between the objects. The pre... | 06/26/1990 |
| 4776802 | Learning aid and puzzle A learning aid comprising a. a disk having a plurality of sectors, each of the sectors having a descriptive matter section adjacent the periphery of the disk, the descriptive matter section occupying a portion of each of the sectors, b. a plurality of removabl... | 10/11/1988 |
| 4640512 | Interactive book-puzzle instructional entertainment system An interactive book-puzzle instructional entertainment system envisions a story book of consecutively-arranged pages with different indicia and a portion of a complemental supporting story imprinted on each of the consecutive pages, and a jigsaw puzzle in... | 02/03/1987 |
| 4422642 | Novelty educational puzzle apparatus A novelty educational puzzle for instructing users in multidirectional, mathematical and grammatical skills that is restrictive as to both the answers and problems in both the vertical and horizontal directions as well as being color coded to further aid ... | 12/27/1983 |
| 4361328 | Sheet interfitting section puzzle A sheet interfitting section puzzle includes incongruent pieces with complementary indicia which are physically separated by the puzzle piece internal edges and complementally abuttable internal edges which may be arranged in only one combination with all... | 11/30/1982 |
| 4083123 | Jigsaw puzzle with extra interlock This invention is a teaching aid for use by children and others in learning the association between mechanical items. It is characterized by two parts of a mechanical item which are capable of being connected together, being respectively connected to diff... | 04/11/1978 |
