Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 4080087 | Railless walkway for the visually handicapped A railless walkway for blind and visually handicapped persons is constructed using foot plates fastened to the ground. By feeling humps made into the foot plates, the blind are guided along walkways without the use of rails or canes. Variations in the sha... | 03/21/1978 |
| 3938904 | Passage structures for use in acquiring the techniques for driving motor cycles A plurality of portable road-type structures which contain a variety of differently shaped surfaces to simulate driving conditions which might be experienced by an individual driving a vehicle, for example, a motorcycle. The portable road-type structures ... | 02/17/1976 |
