Air filter

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Description

The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application with color drawings will be provided by the United States Patent and Trademark Office upon request and payment of the necessary fee.

FIG. 1 is a perspective view showing the new design for an air filter.

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is a perspective view showing the new design for an air filter;

FIG. 7 is an enlarged view of a portion of the air filter of FIG. 6;

FIG. 8 is a top view thereof; and,

FIG. 9 is an enlarged view of a portion of the air filter of FIG. 8.

The claimed area of the air filter of FIGS. 6-9 is illustrated with the color designation for the color yellow. The thicker dash-dot-dash broken lines define the boundaries of the claimed design on the surface(s) of the filter media, while the thinner dash-dash lines defining other boundaries relative to the edges of the media and the frame; these lines form no part of the claimed design.

The portions in the drawing views shown in broken lines form no part of the claimed design.

Claims

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

Referenced Cited
U.S. Patent Documents
D425189 May 16, 2000 Gillingham
D544949 June 19, 2007 Winters et al.
D549314 August 21, 2007 Wennerstrom
D593189 May 26, 2009 Kawano
D605275 December 1, 2009 Kawano
D652497 January 17, 2012 Troxell
D655803 March 13, 2012 Platt
D655804 March 13, 2012 Platt
D657858 April 17, 2012 Platt
D679792 April 9, 2013 Hollingsworth
D690407 September 24, 2013 Williams
D713023 September 9, 2014 Chen
D717420 November 11, 2014 Von Seggern
D725390 March 31, 2015 Sanocki
D732153 June 16, 2015 Sanocki
9174159 November 3, 2015 Sanocki
D754315 April 19, 2016 Morin
Foreign Patent Documents
3272301 January 2003 CN
303386517 September 2015 CN
303388704 September 2015 CN
D119882 March 2004 JP
Other references
  • Trademark Application Serial No. 86-935,298, filed Mar. 10, 2016.
  • Trademark Application Serial No. 86-912,631, filed Feb. 18, 2016.
Patent History
Patent number: D875909
Type: Grant
Filed: Jun 20, 2016
Date of Patent: Feb 18, 2020
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: Glen O. Gregerson (Hudson, WI), Jonathan M. Lise (Woodbury, MN)
Primary Examiner: Karen E Kearney
Assistant Examiner: John A Voytek
Application Number: 29/568,568
Classifications
Current U.S. Class: Filter (D23/365)