Printing and office machinery – Typewriter or calculator – Calculator
Patent
1979-02-21
1981-04-14
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
Calculator
D10 2, D14 72, D18 7, D1801
Patent
active
D02588897
REFERENCES:
patent: D212784 (1968-11-01), Yoshida
patent: D233347 (1974-10-01), Beitler et al.
Electronic Design 20, 9/27/77, p. 32-Calculator at top right.
HFD-Retailing Home Furnishings, 6/5/1978, p. 55-CT.600 at bottom right.
Sharp Corporation
Zarfas Louis S,.
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