4. Telephonic communications
  5. Terminal
  6. Housing or housing component

Roger D. Benning

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Noise-cancelling telephone handset

Telephonic communications – Terminal – Housing or housing component
Patent

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Outbound noise cancellation for telephonic handset

Telephonic communications – Substation or terminal circuitry – Conversion of signal form
Patent

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Telephone headset structure for reducing ambient noise

Telephonic communications – Terminal – Housing or housing component
Patent

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Transmitter/receiver for combined adaptive array processing...

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate

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Profile ID: LFUS-PAI-P-87651

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