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 |
| 5322046 | Electronic fuel injector control for rotary vacuum fuel conversion device An electronic fuel injector control is provided for selectively activating fuel injectors for introducing macroscopic liquid fuel droplets into the vacuum chamber of a device for converting fuel into microscopic fuel droplets and fuel vapor. The control h... | 06/21/1994 |
| 5226400 | Device for conversion of liquid fuel into fuel vapor and microscopic liquid droplets A fuel dispersion device has been provided in the form of a vacuum pump in which fuel is injected as macroscopic fuel droplets in metered quantities into a vacuum chamber in the pump where it is converted to a converted fuel in the form of a mixture of a ... | 07/13/1993 |