Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1989-04-20
1991-04-02
Burke, Wallace R.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
D14114, D14115
Patent
active
D03158969
REFERENCES:
patent: D285203 (1986-08-01), Milroy et al.
patent: D286047 (1986-10-01), Roots et al.
patent: D301233 (1989-05-01), Briscoe
patent: D309449 (1990-07-01), MacDonald et al.
patent: 4650934 (1987-03-01), Burke
patent: 4913573 (1990-04-01), Retter
patent: 4917516 (1990-04-01), Retter
Burke Wallace R.
Hogeboom Robert C.
Mowle John E.
Northern Telecom Limited
Nunn Freda S.
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