Calculator

Printing and office machinery – Typewriter or calculator – Calculator

Design Patent

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Details

CD18S011000

Design Patent

active

D0513035

CLAIM:
The ornamental design for a calculator, as shown and described.

REFERENCES:
patent: 3823309 (1974-07-01), Caruso
patent: D257976 (1981-01-01), Schmidt
patent: D279565 (1985-07-01), Forbis et al.
patent: D403667 (1999-01-01), Musha
patent: D422300 (2000-04-01), Leung
patent: D433059 (2000-10-01), Okumura et al.
patent: 2013932 (1991-04-01), None
Hong Kong Enterprise; Mar. 1989, p. 145; Prod Art Co., Ltd.; Calculator at the bottom right; Model # MD 805.

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