Printing and office machinery – Typewriter or calculator – Calculator
Patent
1981-10-09
1983-06-07
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
Calculator
D1801
Patent
active
D02692791
REFERENCES:
patent: D226485 (1973-03-01), Kitai
patent: D259349 (1981-05-01), Hirata et al.
patent: D265913 (1982-08-01), Yoshioka et al.
Fushimoto Hideo
Hirooka Junji
Canon Kabushiki Kaisha
Zarfas Louis S,.
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