Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1988-02-24
1990-07-10
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03091309
REFERENCES:
patent: D218753 (1970-09-01), Lauer
patent: D242926 (1977-01-01), Abrahamsen et al.
patent: D267490 (1983-01-01), LaDue et al.
patent: D273866 (1984-05-01), LaDue et al.
patent: D278712 (1985-05-01), Adachi et al.
patent: D283817 (1986-05-01), Sakamoto
Adachi Koushirou
Hattori Tousaku
Takahashi Yoshiaki
Watanabe Hiroshi
Yoshida Atsuo
Hitachi , Ltd.
Lucas Susan J.
Nunn Freda S.
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