Air filter
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The claimed area of the air filter is illustrated with the color designation for the color yellow. The thicker dash-dash broken lines define the boundaries of the claimed design and form no part thereof.
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.
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D254506 | March 18, 1980 | Holmberg |
4225442 | September 30, 1980 | Tremblay |
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5038834 | August 13, 1991 | Siegfried |
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D499177 | November 30, 2004 | Kosmider |
D599465 | September 1, 2009 | Mitchell |
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- Pleated filter reference found online [Jan. 11, 2017] http://furnacefiltercare.com/residential/pleated-filters/.
- Trademark Application Serial No. 86-935,298, filed Mar. 10, 2016.
- Trademark Application Serial No. 86-912,631, filed Feb. 18, 2016.
Type: Grant
Filed: Jun 20, 2016
Date of Patent: Oct 16, 2018
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: Glen O. Gregerson (Hudson, WI), Jonathan M. Lise (Woodbury, MN)
Primary Examiner: Robert M. Spear
Assistant Examiner: John A Voytek
Application Number: 29/568,536