4. Recording, communication, or information retrieval equipment
  5. Video or audio transmission, recording or playback equipment
  6. Public address system
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Central unit for conference and public address systems

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Design Patent

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Clapper megaphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Patent

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Electronic megaphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Design Patent

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Foldable megaphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Design Patent

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Foldable megaphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Design Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Hand held, self contained, personal voice amplifier

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Humorous megaphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Patent

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Megaphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Patent

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Megaphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Patent

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Megaphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Design Patent

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Megaphone for use with bingo games

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Patent

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Portable entertainment and communication unit

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Patent

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Public address system

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Design Patent

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Public address unit

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Patent

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Speech amplifier tube

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Design Patent

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Wireless public address system

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Public address system
Design Patent

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