Electronic calculating machine

Details Electronic calculating machine Electronic calculating machine

1979-05-04

1981-05-12

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Calculator

D1801

Patent

active

D02592010

REFERENCES:
patent: D238493 (1976-01-01), Maeda
patent: D243251 (1977-02-01), Hazama et al.
patent: D243535 (1977-03-01), Ikeda
HFD-Retailing Home Furnishings, 6/5/1978, p. 55-Sharp EL.5808 at top right.

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