Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1989-04-26
1991-01-15
Burke, Wallace R.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03137937
REFERENCES:
patent: D227768 (1973-07-01), DiBenedetto
patent: D261528 (1981-10-01), Sakai et al.
patent: D281246 (1985-11-01), Lenzi
patent: D289291 (1987-04-01), Kapper
patent: D296329 (1988-06-01), Day et al.
patent: D298038 (1988-10-01), Brown et al.
patent: D303956 (1989-10-01), Ditzik
patent: 4160242 (1979-07-01), Fowler et al.
patent: 4692756 (1987-09-01), Clark
patent: 4775782 (1988-10-01), Mergenthaler et al.
Burke Wallace R.
Hawk Jr. Wilbert
Muckenthaler Geroge J.
NCR Corproation
Nunn Freda S.
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