4. Communications, electrical: acoustic wave systems and devices
  5. Signal transducers

Larry A. Marcus

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Coupling apparatus for telephone handsets

Telephonic communications – Including aid for handicapped user
Patent

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Extendable telephone handset with flexible electrical interconne

Telephonic communications – Terminal – Housing or housing component
Patent

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Magnetoresistive microphone and acoustic sensing devices

Communications – electrical: acoustic wave systems and devices – Signal transducers
Patent

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Telephone handset

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

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Profile ID: LFUS-PAI-P-636369

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