Air cleaner
Latest 3M Innovative Properties Company Patents:
Description
FIG. 1 is a perspective view of a first embodiment of an air cleaning device, showing our new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a right view thereof;
FIG. 4 is a left view thereof; and,
FIG. 5 is a top or bottom view thereof.
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
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Patent History
Patent number: D484228
Type: Grant
Filed: Nov 20, 2002
Date of Patent: Dec 23, 2003
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: 29/171,315
Type: Grant
Filed: Nov 20, 2002
Date of Patent: Dec 23, 2003
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: 29/171,315
Classifications