Electronic calculator

Details Electronic calculator Electronic calculator

1983-05-02

1985-07-16

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Calculator

D28 83

Patent

active

D02796880

REFERENCES:
patent: D243250 (1977-02-01), Hazama
patent: D249822 (1978-10-01), Ohie et al.
patent: D250063 (1978-10-01), Nishino et al.
patent: D255125 (1980-05-01), Hazama et al.
Home Furnishings Daily, Mon. 6/2/75, p. 18-Sharp Foldable Calculator at center right.
Merchandising, 6/1983, p. 57-Foldable Solar Calculator at lower right.

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