Combined desk top electronic calculator, radio and clock

Details Combined desk top electronic calculator, radio and clock Combined desk top electronic calculator, radio and clock

1979-06-25

1981-12-15

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Combined

D10 2, D14 72, D18 7, D1801

Patent

active

D02622939

REFERENCES:
patent: D247493 (1978-03-01), Kushida et al.
patent: D247780 (1978-04-01), Kawano
patent: D254737 (1980-04-01), Usami et al.
Electronic Design 20, 9/27/1977, p. 32-Talking Calculator at top middle.

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