Air filtering device designed for installation over an interior vent grill of evaporative coolers

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Description

FIG. 1 is a front elevational view of the air filtering device designed for installation over an interior vent grill of evaporative coolers showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is an isometric view thereof.

Referenced Cited
U.S. Patent Documents
2825500 March 1958 McLean
5100445 March 31, 1992 Johnson
5433772 July 18, 1995 Sikora
Patent History
Patent number: D382049
Type: Grant
Filed: Apr 1, 1996
Date of Patent: Aug 5, 1997
Inventor: Flavio C. Trampp (Claypool, AZ)
Primary Examiner: Holly Baynham
Application Number: 0/52,510
Classifications
Current U.S. Class: Filter (D23/365)
International Classification: 2304;