Printing and office machinery – Typewriter or calculator – Calculator
Patent
1985-01-02
1987-04-21
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
Calculator
D18 2
Patent
active
D02894130
REFERENCES:
patent: D268421 (1983-03-01), Hirata et al.
patent: D269354 (1983-06-01), Ishida
patent: 3843851 (1974-10-01), Harada et al.
Endo Aiko
Fushimoto Hideo
Canon Kabushiki Kaisha
Zarfas Louis S,.
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