Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1988-12-02
1990-05-15
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03078930
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Kato Arthur K.
Koizumi Osamu
Leonard Vurnen J.
Sakurai Osamu
Kirn Walter N.
Little Douglas B.
Lucas Susan J.
Minnesota Mining and Manufacturing Company
Nunn Freda S.
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