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United States Utility Patents
4,122,300 - 4,122,309
Previous 10 Next 10
| Number | | Title |
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4,122,300 |
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Data transmission system and application thereof to the transmission of analog signals and of data in a network with delta modulation |
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4,122,301 |
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Selection of branch lines of multipoint junction circuits |
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4,122,302 |
|
Two way dynamic and electrostatic speaker enclosure with side vent for greater high frequency dispersion |
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4,122,303 |
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Improvements in and relating to active sound attenuation |
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4,122,304 |
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Control circuitry for a radio telephone |
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4,122,305 |
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Dictating machine control unit |
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4,122,306 |
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Telephone answering apparatus providing selective message communication |
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4,122,307 |
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Telephone voice frequency response system for message recording |
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4,122,308 |
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Telephone call metering device |
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4,122,309 |
|
Sequence generation by reading from different memories at different times |
For U.S. patent law, rules, and procedures see MPEP.
Disclaimer. Information presented on this page while believed to be reliable, is provided "as is" with no warranties of its accuracy or timeliness. For legal advice seek help of a licensed professional.
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