Air cleaner

Skip to: Description  ·  Claims  ·  References Cited  · Patent History  ·  Patent History
Description

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

FIG. 2 is a right view of FIG. 1;

FIG. 3 is a left view of FIG. 1;

FIG. 4 is a top view of FIG. 1; and,

FIG. 5 is front view of FIG. 1.

The phantom line shown in the drawings forms no part of the claimed design(s).

Claims

The ornamental design for a air cleaner, as shown and described.

Referenced Cited
U.S. Patent Documents
D270467 September 6, 1983 Fowler et al.
D379220 May 13, 1997 Ellwood
D447124 August 28, 2001 Morimiya et al.
D450825 November 20, 2001 Nakamura et al.
D451181 November 27, 2001 Miwa
D457230 May 14, 2002 Huang
D459457 June 25, 2002 Pillion et al.
D459458 June 25, 2002 Pillion et al.
D471883 March 18, 2003 Sugiyama et al.
Patent History
Patent number: D491655
Type: Grant
Filed: Aug 5, 2003
Date of Patent: Jun 15, 2004
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: Zhiqun Zhang (Roseville, MN), Robert M. Swinehart (Marine on St. Croix, MN)
Primary Examiner: Robin V. Taylor
Attorney, Agent or Law Firms: Gary L. Griswold, Robert W. Sprague, William J. Bond
Application Number: 29/187,762
Classifications
Current U.S. Class: Air Cleaner (D23/364)
International Classification: 2304;