Air duct filter apparatus

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Description

FIG. 1 is a front plan view of the air duct filter apparatus of the present invention;

FIG. 2 is a back plan view of the air duct filter apparatus of FIG. 1;

FIG. 3 is a left side plan view of the air duct filter apparatus of FIG. 1;

FIG. 4 is a right side plan view of the air duct filter apparatus of FIG. 1;

FIG. 5 is a top plan view of the air duct filter apparatus of FIG. 1; and,

FIG. 6 is a bottom plan view of the air duct filter apparatus of FIG. 1.

Referenced Cited
U.S. Patent Documents
D362905 October 3, 1995 Wulf et al.
3760568 September 1973 Newmann et al.
4175936 November 27, 1979 Lough et al.
Patent History
Patent number: D392031
Type: Grant
Filed: Jan 17, 1997
Date of Patent: Mar 10, 1998
Inventor: Wendy B. Miller (Pelham, AL)
Primary Examiner: Lisa Lichtenstein
Application Number: 0/65,041
Classifications
Current U.S. Class: Filter (D23/365); Vent, Ductwork, Or Element Thereof (D23/393)
International Classification: 2304;