Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 4164222 | Laser ophthalmological unit A laser ophthalmological unit comprises a lasing source and an optical sym having a slit source for illumination of the surgery field. This laser and illumination source are housed in a common casing hinged on the bracket of the microscope designed for o... | 08/14/1979 |
| 4141362 | Laser endoscope Endoscope equipped both with an observation optic and a Laser beam, including a deflectable reflector enabling the laser beam to scan the body tissue and a focus enabling the laser beam focal plane to be varied depth-wise in the body tissue.... | 02/27/1979 |
| 4026293 | Photocoagulator A photocoagulator using a gas discharge lamp and a mirror for forming a double image of the luminous plasma region of the lamp in a photocoagulation area adjusted for size by interchangeable field stops is improved for easier adjustability when field stop... | 05/31/1977 |
| 3982541 | Eye surgical instrument Method and apparatus are disclosed for surgically removing surface portions of an eye such as cataract tissue. The eye surface portions to be removed are vaporized by a carbon dioxide laser beam. Smoke and vaporized portions are withdrawn by a vacuum pump... | 09/28/1976 |
| 3930504 | Portable light coagulator A light coagulator for treatment of eye disorders is provided, utilizing a converging light beam, a collimated lens system and a mirror to deliver a high powered beam of light to the eye for use as a surgical tool. The light coagulator of the invention is... | 01/06/1976 |
