Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1992-08-03
1995-04-25
Douglas, Alan P.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03576752
REFERENCES:
patent: D350733 (1994-09-01), Masujima
patent: 3224355 (1965-12-01), Thomiszer
patent: 4754293 (1988-06-01), Alzawa et al.
patent: 4816921 (1989-03-01), Akiyama et al.
Barthel Jan
Bruegmann Wilfried
Fischer Wolfgang
Gerber Berthold
Guber Wolfgang
Douglas Alan P.
International Business Machines - Corporation
Seaman Kenneth A.
Veynar Caron D.
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