Electronic calculator

Details Electronic calculator Electronic calculator

2007-02-06

2007-02-06

Spear, Robert M. (Department: 2913)

Printing and office machinery

Typewriter or calculator

Calculator

Design Patent

active

29227330

CLAIM:
The ornamental design for an electronic calculator, as shown.

REFERENCES:
patent: D317618 (1991-06-01), Sawada et al.
patent: D317777 (1991-06-01), Sakaguchi et al.
patent: D331745 (1992-12-01), Miyake et al.
patent: D332604 (1993-01-01), Miyake et al.
patent: D335892 (1993-05-01), Onumata
patent: D364890 (1995-12-01), Yamabe et al.
patent: 5530234 (1996-06-01), Loh et al.
patent: D383773 (1997-09-01), Tamaki et al.
patent: D394449 (1998-05-01), Shimizu
patent: D416280 (1999-11-01), Matsuda et al.
patent: D501499 (2005-02-01), Matsuda
patent: 7042713 (2006-05-01), Nicolosi
patent: 2003/0140073 (2003-07-01), Wostrel

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