Calculator

Printing and office machinery – Typewriter or calculator – Calculator

Design Patent

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Design Patent

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D0438237

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

REFERENCES:
patent: D. 255125 (1980-05-01), Hazama et al.
patent: D. 279688 (1985-07-01), Kitai et al.
patent: D. 333298 (1993-02-01), Raslowsky et al.
patent: D. 362865 (1995-10-01), Komuta et al.
patent: D. 421599 (2000-03-01), Garza
patent: D. 427629 (2000-07-01), Chu et al.
patent: D. 427630 (2000-07-01), Chu et al.
patent: D. 429272 (2000-08-01), Chu
patent: D. 430871 (2000-09-01), Chu et al.

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