Electronic calculator

Details Electronic calculator Electronic calculator

1986-04-16

1989-03-14

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Combined

D18 7

Patent

active

D03002276

REFERENCES:
patent: D241381 (1976-09-01), Garnier
patent: D246205 (1977-10-01), Lewis
patent: D253438 (1979-11-01), Markley
patent: D293920 (1988-01-01), Yubisvi et al.
patent: D294282 (1988-02-01), Hung
Unisonic Products Corp., Model #LC-273CK at bottom left.

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