Printing and office machinery – Typewriter or calculator – Calculator
Patent
1984-04-19
1986-06-17
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
Calculator
Patent
active
D02842882
REFERENCES:
patent: D250430 (1978-11-01), Nishiguchi
patent: D255246 (1980-06-01), Yoshicka et al.
patent: D256700 (1980-09-01), Ohie
patent: D257990 (1981-01-01), Herate et al.
patent: D266853 (1982-11-01), Yoshioka et al.
patent: D276625 (1984-12-01), Kikuchi et al.
patent: D280418 (1985-09-01), Hayashi et al.
Sharp Corporation
Zarfas Louis S,.
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