4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Photocell controlled circuit

Michael N. Laiacona

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Apparatus for combining phonograph signal with auxiliary audio s

Patent

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Combined portable microphone and speaker

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

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Device for selectively routing audio signals bidirectionally alo

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent

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Headphone control box

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-638201

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