4. Telephonic communications
  5. Substation or terminal circuitry
  6. Conversion of signal form

Frederick P. DeKalb

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Ear cone for a communications headset

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment
Design Patent

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Earbud headset

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Reexamination Certificate

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Electronic headset telephone

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

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Profile ID: LFUS-PAI-P-1076291

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