Air filter
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The features shown in broken lines depict environmental subject matter only and form no part of the claimed design.
Claims
The ornamental design for an air filter, as shown and described.
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Type: Grant
Filed: Apr 20, 2009
Date of Patent: Dec 1, 2009
Assignee: Nitto Denko Corporation (Osaka)
Inventors: Eizou Kawano (Ibaraki), Youzou Yano (Ibaraki), Takashi Tagou (Ibaraki), Akio Suzuki (Ibaraki)
Primary Examiner: T. Chase Nelson
Assistant Examiner: David G Muller
Attorney: Osha • Liang LLP
Application Number: 29/335,714