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United States Utility Patents
4,937,840 - 4,937,849

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NumberTitle
4,937,840 Circuit for pulsed biphase digital modulation
4,937,841 Method and circuitry for carrier recovery for time division multiple access radio systems
4,937,842 Self adjusting data detector
4,937,843 Digital data block synchronizer
4,937,844 Modem with data compression selected constellation
4,937,845 Fast library element gray code generators without feedback and feedforward networks
4,937,846 Frequency counter-locked-loop apparatus for controlling digitally programmable oscillators
4,937,847 Enhancement system and method for X-ray imaging
4,937,848 X-ray examination apparatus with referencing system for the video display
4,937,849 X-radiation gating and target device



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