Three channel duct

Details Three channel duct Three channel duct

2003-01-31

2004-07-13

Zarfas, Louis S. (Department: 2914)

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

Design Patent

active

D0492987

CLAIM:
I claim the ornamental design for a three channel duct, as shown and described.

REFERENCES:
patent: 5439035 (1995-08-01), Dal PaluúAttilio
patent: D400670 (1998-11-01), Sorkin
patent: 6659135 (2003-12-01), Sorkin
patent: 6666233 (2003-12-01), Sorkin

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