Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1991-02-13
1993-07-13
Burke, Wallace R.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
D19 52
Patent
active
D03373223
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patent: D308198 (1990-05-01), Tedham et al.
patent: D308364 (1990-06-01), Beasley, Jr. et al.
patent: D313409 (1991-01-01), Chowdhree et al.
patent: 4745491 (1988-05-01), Kishi et al.
Burke Wallace R.
Tung M. H.
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