Printing and office machinery – Typewriter or calculator – Calculator
Patent
1980-09-10
1982-11-09
Feifer, Melvin B.
Printing and office machinery
Typewriter or calculator
Calculator
D10 57, D1801
Patent
active
D02668556
REFERENCES:
patent: D243535 (1977-03-01), Ikeda
patent: D251272 (1979-03-01), Hazama et al.
patent: D254723 (1980-04-01), Lawrence et al.
patent: D258966 (1981-04-01), McCrae
Murakami Osamu
Yoshioka Eiichi
Canon Kabushiki Kaisha
Feifer Melvin B.
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