Plastic air vent block

Details Plastic air vent block Plastic air vent block

2007-02-27

2007-02-27

Zarfas, Louis (Department: 2914)

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

Design Patent

active

29223425

CLAIM:
The ornamental design for a plastic air vent block, as shown and described.

REFERENCES:
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patent: D377083 (1996-12-01), Smolarski
patent: D419661 (2000-01-01), Keen et al.
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patent: D419663 (2000-01-01), Keen et al.
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patent: D419665 (2000-01-01), Keen et al.
patent: D419666 (2000-01-01), Keen et al.
patent: D419667 (2000-01-01), Keen et al.
patent: D419668 (2000-01-01), Keen et al.
patent: D510997 (2005-10-01), Berger
patent: D517191 (2006-03-01), Berger
patent: D517192 (2006-03-01), Berger

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