In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 5638096 | Computer screen frame This invention provides a device that enhances a computer user's visual environment by providing a useful and/or aesthetically pleasing frame for the computer display screen. In a preferred embodiment, the screen is removably attached to the bezel of a co... | 06/10/1997 |
| 3971470 | X-ray cassette film holder A cassette for holding x-ray film and the like is disclosed. A cam hinge urges a cassette lid and a tray into a closed film holding position from which visible light is excluded. The lid and tray are pulled toward one another by magnetic attractors locate... | 07/27/1976 |