4. Communications: electrical
  5. Land vehicle alarms or indicators
  6. Internal alarm or indicator responsive to a condition of the...

Robert L. Doss

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Full duplex telephone set using echo cancellation and side...

Telephonic communications – Echo cancellation or suppression
Reexamination Certificate

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Gear indicator

Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Reexamination Certificate

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Microphone with reduced noise

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Housed microphone
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2549568

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