Calculator casing

Details Calculator casing Calculator casing

1976-09-02

1978-09-12

Lucas, Susan J.

Printing and office machinery

Printing equipment

Hand held or manipulated

D1801

Patent

active

D02493888

REFERENCES:
patent: D233347 (1974-10-01), Beitler
patent: D238788 (1976-02-01), Goldsamt
Commodore C108 Electronic Calculator Advertisement Rec'd Ja. 1972, Calculator.
Office Products, Feb. 1975, p. 64, Model 12-M Electronic Desk-top Calculator.

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