Printing and office machinery – Typewriter or calculator – Calculator
Patent
1981-12-23
1984-03-27
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
Calculator
Patent
active
D02732009
REFERENCES:
patent: D258740 (1981-03-01), Matsumoto
HFD-Retailing Home Furnishings, 7/14/80, Section one, p. 50--Petrous Solaris Solar Calculator PS-1 at bottom.
HFD-Retailing Home Furnishings, 3/30/81, Section one, p. 48-Sanyo Solar Calculator at top.
Sharp Corporation
Zarfas Louis S,.
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