Ergo calculator

Details Ergo calculator Ergo calculator

2011-06-28

2011-06-28

Rademaker, Garth (Department: 2913)

Printing and office machinery

Typewriter or calculator

Calculator

Design Patent

active

D0640734

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

REFERENCES:
patent: D334766 (1993-04-01), Peersmann
patent: D337588 (1993-07-01), Cruz et al.
patent: D424604 (2000-05-01), Leung
patent: D451603 (2001-12-01), Bastyr et al.
patent: D477310 (2003-07-01), Moransais
patent: D513035 (2005-12-01), Lui
patent: D535335 (2007-01-01), Mandel
patent: D538327 (2007-03-01), Weinstein
patent: D564015 (2008-03-01), Booty
patent: D570901 (2008-06-01), Weinstein
patent: D591731 (2009-05-01), Lee et al.
patent: 2006/0218044 (2006-09-01), Gal et al.

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