Case for an electronic calculator

Details Case for an electronic calculator Case for an electronic calculator

1978-03-06

1980-08-19

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Calculator

D1801

Patent

active

D02564726

REFERENCES:
patent: D231357 (1974-04-01), Meyers et al.
patent: D243251 (1977-02-01), Hazama et al.
patent: D245109 (1977-07-01), Yoshioka
patent: D250063 (1978-10-01), Nishino et al.

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