Printing and office machinery – Typewriter or calculator – Calculator
Patent
1982-09-29
1985-11-19
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
Calculator
Patent
active
D02814358
REFERENCES:
patent: D249742 (1978-09-01), Ohie
patent: D260646 (1981-09-01), Akazawa et al.
patent: D273593 (1984-04-01), Sakamoto
Hayashi Shigeaki
Sakaguchi Hiroshi
Sawada Masaji
Yamada Kazuo
Sharp Corporation
Zarfas Louis S,.
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