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Samuel R. Williamson

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.pi./4-DQPSK delay spread detection and compensation apparatus a

Pulse or digital communications – Receivers – Angle modulation
Patent

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Acoustic calibration arrangement for a voice switched speakerpho

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Patent

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Acoustic direction identification system

Electrical audio signal processing systems and devices – Monitoring of sound
Patent

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Adaptive power cycling for a cordless telephone

Telephonic communications – Audio message storage – retrieval – or synthesis
Patent

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Adjustable telephone handset

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Radio transceiver
Patent

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Profile ID: LFUS-PAI-P-99859

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