William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7296999 | Educational display mitt for magnetic playing pieces and method A teaching system comprising a set of magnetic playing pieces, a display mitt comprising a first panel being associated with the palm of a user of the mitt; including a flexible metallic layer for attracting at least one magnet, an exterior layer covering the flexib... | 11/20/2007 |
| 7287751 | Barrier game display unit education system The invention is directed to an educational system for use in instruction of educational concepts while playing a game. The system consists of a game sheet having an illustration for use in instruction of an educational concept, a set of magnetic playing pieces asso... | 10/30/2007 |
| 7275934 | Magnetic apparatus for demonstration of binary numbers An apparatus and method for motivating students in mathematics education, computer technology education and information encoding. The apparatus consists of a container holding multi-state sources and a reading device, if necessary, that can determine the state of th... | 10/02/2007 |
| 7273375 | Teaching aid device and method of teaching A device for instructing mathematics includes a work surface and a plurality of movable elements. Each of the movable elements includes, on a front surface thereof, at least a portion of a visible mathematical symbol (including numeric and nonnumeric symbols) thereo... | 09/25/2007 |
| 7261295 | Jump for music game This is a musical rhythms game whereby players move to rhythms of music notation placed on a staff. There are two separate versions—a floor and table top version, which are designed to help players develop more rhythmic awareness and to create a better understandi... | 08/28/2007 |
| 7192628 | Magnetically interactive substrates A substrate is printed with areas of magnetizable ink. The magnetizable ink is compressed into the surface of the substrate, and overprinted to hide it. Suitable inks for the purpose are disclosed. The ink may be permanently magnetized in any of a variety of pattern... | 03/20/2007 |
| 7114278 | Personalized picture frame assembly A picture frame assembly in which tiles bearing letters, numerals, symbols or other indicia are affixed to the frame to provide a personalized or customized appearance. The tiles may slide within a groove integrally formed in the frame or be magnetically attached to... | 10/03/2006 |
| 7101185 | Method and apparatus for automated training of language learning skills A computer program for execution on a computing device is provided to cross-train students in language development skills such as letter-word correspondence, word recognition, vocabulary, and sentence and paragraph comprehension. A set of programs provide an adaptiv... | 09/05/2006 |
| 6955610 | Sports training apparatus An apparatus is provided that allows individuals of diverse skill levels to improve their respective sports-related swings. The apparatus provides visual, auditory and tactile feedback as to whether an individual is correctly “loading”, “retaining”, and “r... | 10/18/2005 |
| 6932613 | Pre-writing teaching aid and method to assist beginning writers in creating letters A pre-writing teaching aid assists beginning writers in creating letters and pre-writing strokes. The teaching aid includes a magnetic-responsive drawing tablet including a housing, a writing surface and structure for displaying an image responsive to magnetic conta... | 08/23/2005 |
| 6793251 | Binder with magnetically retained pages A binder has a front cover and a back cover. A first page assembly for mounting in the binder includes a first magnet. A second page assembly for mounting in the binder in an overlying relationship with the first page assembly includes a second magnet for releasably... | 09/21/2004 |
| 6513708 | Mathematics teaching system A mathematics teaching system for visually and physically teaching a student how to perform multiplication and division calculations in a simple to understand format. The mathematics teaching system includes a housing having a plurality of apertures align... | 02/04/2003 |
| 6354840 | Basic educational system An educational system is provided including a recipient surface such as a cloth or base having a plurality of entities positioned thereon which are selected from the group of entities including colors, shapes, alphabetic characters, and numbers. Also incl... | 03/12/2002 |
| 6273726 | Method of associating oral utterances meaningfully with word symbols seriatim in an audio-visual work and apparatus for linear and interactive application An audio-visual work and method of its creation which work has writings placed on the pictures of the work so that as each word or other utterance is heard a writing to be associated with the hearing is coordinated with seeing of the writing such that the... | 08/14/2001 |
| 6062863 | Method of associating oral utterances meaningfully with word symbols seriatim in an audio-visual work and apparatus for linear and interactive application An audio-visual work and method of its creation which work has writings placed on the pictures of the work so that as each word or other utterance is heard a writing to be associated with the hearing is coordinated with seeing of the writing such that the... | 05/16/2000 |
| 5993218 | Multi-sided word kit A word kit includes an assemblage of objects, each object presenting a plurality of surfaces. The assemblage includes a first set of objects having a first surface of the plurality surfaces. A word selected from an interchangeable part of speech is depict... | 11/30/1999 |
| 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 |
| 5813154 | Magnetic display format system for accomodation of alphanumeric character width difference A changeable magnetic sign kit including; interlocking pieces, upon which are imprinted alphanumeric characters, which can be reconstructed into different messages, and which vary in width to accomodate the variety of widths of characters within a font st... | 09/29/1998 |
| 5666712 | Method of making designs using magnetic materials Two-dimensional designs are created by providing a magnetic surface and attaching magnetic parts to the surface. The parts may be precut geometric and representational forms cut from flexible magnetic material. The surface may be a surface painted with a ... | 09/16/1997 |
| 5646601 | Magnetic apparatus for actuating a reed switch and associated system A magnetic apparatus (10) is provided having a bottom plate (12), a top plate (14), a first magnet guide (16), a second magnet guide (18) and a magnet member (20) which is slidable upon a slide axis (22) through apertures (40) and (54) of first magnet gui... | 07/08/1997 |
| 5337501 | Interlocking means for magnetic alphanumeric characters Magnetic alphanumeric characters having substantially the capability to be properly aligned to one another during display is proposed. The characters consist of magnetic materials with concentrated magnetic strength on one face. The magnetized face is glu... | 08/16/1994 |
| 5006000 | Educational aid with substitutable magnetic items An educational and entertaining device stimulates learning, creativity, imagination, and artistic interpretation. The principal elements in the device are flexible magnetic character pieces and geometrically shaped metallic chips which, when magnetized, f... | 04/09/1991 |
| 4952153 | Surface mounted magnetic toy A toy including a three-dimensional base having a magnetic sheet on its rearward side for temporary attachment to a metallic surface. The frontal surface of the base defines plural recesses each for the reception of a correspondingly shaped magnetic piece... | 08/28/1990 |
| 4865324 | Magnetic wheel puzzle A puzzle comprises a plurality of puzzle elements held together along a common axis. Each of the puzzle elements includes first and second faces and a peripheral edge. A series of discrete symbols are formed along the peripheral edge of each element. Pref... | 09/12/1989 |
| 4846689 | Magnetic educational aid and teaching method An educational aid, comprising a figure representing an animate object. A plurality of first enhancing means are provided which are adapted to attach magnetically to the figure. One surface of the first enhancing means bears representation of at least one... | 07/11/1989 |
| 4838793 | Activity display article with removable manipulatives An activity display article is constructed to have multi-educational features especially useful for teaching basic skills to young children. The article comprises at least one activity sheet having visual objects printed thereon. A magnetic strip is mount... | 06/13/1989 |
| 4832605 | Teaching and demonstration system A teaching and demonstration system is disclosed comprising a looseleaf notebook with a clear plastic pocket attached to the outside of its front cover. A metallic sheet is inserted into the pocket and a nonmetallic sheet is inserted between the metallic ... | 05/23/1989 |
| 4822283 | Semantic mapping device for teaching language skills Progressively smaller pieces can be connected to the largest piece to aid in semantic mapping of an informative passage, for example. Legends can be applied to the pieces (and can be wiped off later). The pieces can be connected mechanically or magnetical... | 04/18/1989 |
| 4795348 | Communication aid method and apparatus for the handicapped A communication aid that is useful to individuals who have lost the ability to communicate with other individuals by talking and/or writing. The communication aid includes a generally flat plate or panel which carries thereon a plurality of short message ... | 01/03/1989 |
| 4753439 | Message type recording psychographs A psychograph, of a type employing a movable indicator to designate indicia on a principal part of the device such as a board, can be constructed so that the indicator will cause a switch to close each time it points to or otherwise designates an indicia.... | 06/28/1988 |
| 4702700 | Activity book with removable manipulatives An activity book is constructed to have multi educational features especially useful for teaching reading readiness skills to young children. The book comprises a set of bound pages. A plurality of pages have visual objects thereon with magnetic means mou... | 10/27/1987 |
| 4575091 | Word game of magnetizable letters for children A word game for children comprising the combination of a plurality of magnetizable alphabet letters for throwing on a supporting surface to form a pile thereof, a permanent magnet stiff wand having a handle for pulling a desired one or more of the letters... | 03/11/1986 |
| 4366637 | Set of advertising components A kit of components for advertising purposes comprises a coated steel panel, a filling device having a plurality of coated steel sheets, and a plurality of flexible magnetic characters made from rubber or similar synthetic material having incorporated the... | 01/04/1983 |
| 4353700 | Educational learning aid An educational learning aid for teaching children the letters of the alphabet, numbers and other symbols in their proper sequence. The educational learning aid includes a plastic face cover having openings conforming to the shape of the letters, numbers a... | 10/12/1982 |
| 4295832 | Educational toy A novel educational toy is provided which comprises, in combination, an elongated support rod and a plurality of separated magnetic members slideably received on the rod. Each member has a pair of opposed faces, the faces having an opposite polarity to ea... | 10/20/1981 |