Desk-top electronic calculator

Details Desk-top electronic calculator Desk-top electronic calculator

1982-10-18

1984-12-04

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Calculator

Patent

active

D02766256

REFERENCES:
patent: D218994 (1970-10-01), Suganoya
patent: D233442 (1974-10-01), Saito

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