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 |
| 4190866 | Surveillance device incorporating a television camera Compact surveillance device including a miniature television camera mounted with its optical axis vertical, and a mirror mounted above the lens so that the camera views the area to be surveyed, such as the area outside the door of an office, through a win... | 02/26/1980 |
