4. Recording, communication, or information retrieval equipment
  5. Video or audio transmission, recording or playback equipment
  6. Telephone equipment

Lee A. Johnson

Inventor

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Door bell/answering system

Communications: electrical – Condition responsive indicating system – Specified indicator structure
Patent

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Door mounted answering machine

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

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Field reconfiguration data bus cabinet computer system

Boots – shoes – and leggings
Patent

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Radio altimeter rate linearizer

Registers – Transfer mechanism – Traveling pawl
Patent

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Profile ID: LFUS-PAI-P-708274

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