Electronic calculator

Details Electronic calculator Electronic calculator

1982-05-03

1984-04-10

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Calculator

Patent

active

D02733935

REFERENCES:
patent: D269277 (1983-06-01), Yoshioka et al.
patent: D269355 (1983-06-01), Yamagami
Solarex Reprint of Mar. 1977 Jewelers' Circular-Keystone Article, calculator at left.
HFD-Retailing Home Furnishings, 7/14/80, Section One, p. 50-Petrous Solar Calculator PSII at bottom right.
HFD-Retailing Home Furnishings, 3/30/81, Section One, p. 48-Sanyo Solar Calculator at top.

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