Desk-top electronic calculator

Details Desk-top electronic calculator Desk-top electronic calculator

1985-09-23

1988-02-23

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Calculator

Patent

active

D02943689

REFERENCES:
patent: D277681 (1985-02-01), Ishida
patent: D284202 (1986-06-01), Satake
patent: D289903 (1987-05-01), Kikuchi

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