Draft blocker

Details Draft blocker Draft blocker

2011-03-29

2011-03-29

Nelson, T. Chase (Department: 2914)

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

Design Patent

active

D0635239

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

REFERENCES:
patent: 4559867 (1985-12-01), Van Becelaere et al.
patent: 4569110 (1986-02-01), Goettel
patent: 4625626 (1986-12-01), Aalto et al.
patent: 4958687 (1990-09-01), Nakagawa
patent: D393709 (1998-04-01), Nishizawa
patent: 5857617 (1999-01-01), Weng
patent: 6708949 (2004-03-01), Twito
patent: 7032883 (2006-04-01), Boardman et al.
patent: D558325 (2007-12-01), Karnes
patent: 7442120 (2008-10-01), Poirier et al.
patent: D601180 (2009-09-01), Takeda
patent: D604828 (2009-11-01), Krohmer et al.
patent: D612925 (2010-03-01), Kameyama et al.

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