Parallel bond lines on a fibrous filtration face mask
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The broken line showing forms no part of the claimed design.
Claims
The ornamental design for parallel bond lines on a fibrous filtration face mask, as shown and described.
Type: Grant
Filed: Oct 23, 2009
Date of Patent: Mar 19, 2013
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventor: Dean R. Duffy (Woodbury, MN)
Primary Examiner: Rashida Johnson
Application Number: 29/345,876