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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 |
| 4224644 | Method and apparatus for controlling a tape player/recorder for retrieving and playing prerecorded information A method and apparatus for controlling a tape player/recorder for retrieving and playing prerecorded selections recorded thereon at spaced locations. According to the method and apparatus, the tape is played, a number indicative of tape position is genera... | 09/23/1980 |
| 3986498 | Remote ECG monitoring system A remote ECG monitoring and telemetry system for use in a hospital equipped with a master antenna television cable system comprising a portable patient sensor/transmitter unit for deriving ECG information and for transmitting a first frequency signal modu... | 10/19/1976 |
