Air filter cleaning device

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Description

FIG. 1 is a perspective view of an air filter cleaning device showing my new design;

FIG. 2 is a side elevational view thereof, all the sides being identical to that shown;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

Claims

The ornamental design for an air filter cleaning device, as shown and described.

Referenced Cited
U.S. Patent Documents
3733639 May 1973 Timian
3958296 May 25, 1976 Fell
5182832 February 2, 1993 McMahon
Patent History
Patent number: D439646
Type: Grant
Filed: May 17, 2000
Date of Patent: Mar 27, 2001
Inventor: Michael R. McMahon (Santee, CA)
Primary Examiner: Lisa Lichtenstein
Attorney, Agent or Law Firm: Brown, Martin, Haller & McClain, LLP
Application Number: 29/123,422
Classifications
Current U.S. Class: Filter (D23/365)
International Classification: 2304;