Combined electronic calculating machine and clock

Details Combined electronic calculating machine and clock Combined electronic calculating machine and clock

1978-05-16

1980-09-16

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Combined

D10 2, D18 7, D1001, D1801

Patent

active

D02569248

REFERENCES:
patent: D229437 (1973-11-01), Miyamoto et al.
patent: D240661 (1976-07-01), Fujiwara
patent: D242385 (1976-11-01), Hamada
patent: D247563 (1978-03-01), Jinbo et al.

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