Desk-top electronic calculator

Details Desk-top electronic calculator Desk-top electronic calculator

1980-04-14

1982-04-20

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Calculator

D1801

Patent

active

D02639688

REFERENCES:
patent: D218994 (1970-10-01), Suganoya
patent: D228236 (1973-08-01), Nakanishi
Merchandising Week, 6/2/75, p. 4, 2230 Calculator at center.

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