Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 7321360 | Systems, methods and devices for efficient communication utilizing a reduced number of selectable inputs Embodiments of the subject invention relate to systems, methods, and devices providing a reduced number of selectable inputs that enable efficient communication. One aspect of what is disclosed are embodiments of a systematic code, which systematic code enables effi... | 01/22/2008 |
| 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 |
| 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 |
| 6755656 | Method and apparatus for adaptive handwriting teaching system One aspect of the invention relates to an electronic writing device for interactive teaching of users to reproduce a selected graphical representation. The electronic writing device comprises a casing, a screen and internal logic placed within the casing. The intern... | 06/29/2004 |
| 6215901 | Pen based computer handwriting instruction A method and system for performing instruction of handwriting skills by animated display of the required stroke motions with simultaneous audio verbal description of these same motions, including the means for a student to practice this lesson with use of... | 04/10/2001 |
| 5114349 | Element for a didactic play, and a set formed by such elements An element for a didactic play, of the type capable of showing several surfaces carrying different representations, which may possibly be combined with the representations of other elements forming a set, in order to compose writings, images or the like, ... | 05/19/1992 |
| 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 |
| 4262432 | Study device A study device for teaching children or other users predetermined study items, such as letters of the alphabet, in response to depressing desired ones of a plurality of push-plate operating portions. The study device includes a casing having a plurality o... | 04/21/1981 |
