Printing and office machinery – Typewriter or calculator – Calculator
Patent
1979-01-22
1981-04-14
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
Calculator
D1801
Patent
active
D02588935
REFERENCES:
patent: D235022 (1975-04-01), Kovacs
patent: D235880 (1975-07-01), Yoshida et al.
patent: 4101962 (1978-07-01), Hakata
Merchandising, 6/76, p. 76-Caslo "Biolator", at right.
Kosmos International Ltd.
Zarfas Louis S,.
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