Combination calculator letter opener

Details Combination calculator letter opener Combination calculator letter opener

2006-09-08

2008-03-11

Spear, Robert M. (Department: 2913)

Bleaching and dyeing; fluid treatment and chemical modification

Bleaching

Chemical

CD18S002000

Design Patent

active

D0563756

CLAIM:
The ornamental design for a combination calculator letter opener, as shown.

REFERENCES:
patent: D333773 (1993-03-01), Schapiro, Jr.
patent: D420271 (2000-02-01), Wenk
patent: D428433 (2000-07-01), Ho
patent: D445125 (2001-07-01), Chan
patent: D469749 (2003-02-01), Kim
patent: D501869 (2005-02-01), Hsu
patent: D515129 (2006-02-01), Robinson
patent: D539318 (2007-03-01), Oas
patent: D542791 (2007-05-01), Fitch et al.
patent: D543823 (2007-06-01), Lee

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