Desk-top electronic calculator

Details Desk-top electronic calculator Desk-top electronic calculator

1981-11-30

1984-03-20

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Calculator

Patent

active

D02731185

REFERENCES:
patent: 3843851 (1974-10-01), Harada et al.
patent: 3986014 (1976-10-01), Katsui et al.
patent: 4055755 (1977-10-01), Nakamura et al.
HFD-Retailing Home Furnishings, 10/13/80, p. 77-Display & Printing Calculator CX3550 at bottom left.

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