Printing and office machinery – Typewriter or calculator – Calculator
Patent
1978-12-22
1981-05-26
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
Calculator
D1801
Patent
active
D02593491
REFERENCES:
patent: D227258 (1973-06-01), Inatomi
patent: D236208 (1975-08-01), Takano
patent: D236485 (1975-08-01), Mox
Hirata Takashi
Odagawa Kazuyoshi
Canon Kabushiki Kaisha
Zarfas Louis S,.
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