Calculator

Details Calculator Calculator

2008-03-11

2008-03-11

Spear, Robert M. (Department: 2913)

Printing and office machinery

Typewriter or calculator

Calculator

Design Patent

active

29266509

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

REFERENCES:
patent: D246042 (1977-10-01), Fossella et al.
patent: D249091 (1978-08-01), Burtis
patent: D335892 (1993-05-01), Onumata
patent: D362266 (1995-09-01), Matsuda
patent: D395890 (1998-07-01), Gerba et al.
patent: D429273 (2000-08-01), Maree et al.
patent: D466147 (2002-11-01), Chan
patent: D469086 (2003-01-01), Hongo
patent: D535335 (2007-01-01), Mandel
patent: D551284 (2007-09-01), Bhavnani

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