Printing and office machinery – Typewriter or calculator – Calculator
Patent
1983-04-25
1985-06-04
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
Calculator
Patent
active
D02791080
REFERENCES:
patent: D233154 (1974-10-01), Saito
patent: D255126 (1980-05-01), Ohie et al.
patent: D256700 (1980-09-01), Ohie
patent: D257990 (1981-01-01), Hirata et al.
The Office, 1/82, p. 177--Calculator QS4164 at bottom left.
Sharp Corporation
Zarfas Louis S,.
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