Printing and office machinery – Typewriter or calculator – Calculator
Patent
1982-12-23
1985-08-20
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
Calculator
Patent
active
D02802090
REFERENCES:
patent: D218993 (1970-10-01), Kitai
patent: D233153 (1974-10-01), Saito
patent: D256700 (1980-09-01), Ohie
patent: D256924 (1980-09-01), Ohie et al.
Hayashi Shigeaki
Sakaguchi Hiroshi
Sawada Masaji
Yamada Kazuo
Sharp Corporation
Zarfas Louis S,.
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