Calculator

Details Calculator Calculator

1984-03-01

1986-06-10

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Calculator

Patent

active

D02842009

REFERENCES:
patent: D273200 (1984-03-01), Sakata
patent: D273301 (1984-04-01), Sawada
patent: D273393 (1984-04-01), Sakamoto
patent: D274822 (1984-07-01), Yamagami et al.

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