Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment
Patent
1989-04-27
1990-04-17
Fay, Jr., Horace B.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Element or attachment
D13108, 379 61, D14149
Patent
active
D03072770
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patent: 4634810 (1987-01-01), Grassi et al.
patent: 4731813 (1988-03-01), Schroeder
British Telecommunications public limited company
Fay Jr. Horace B.
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