Desk top electronic calculator

Details Desk top electronic calculator Desk top electronic calculator

1980-03-03

1982-02-23

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Calculator

D1801

Patent

active

D02631512

REFERENCES:
patent: D251330 (1979-03-01), Kurosu et al.
patent: D256696 (1980-09-01), Ikeda
HFD-Retailing Home Furnishings, 6/5/78, p. 55-El-5808 at top right.
HFD-Retailing Home Furnishings, 6/12/78, p. 35-FX-2500 at top left.

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