Respirator filter

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Description

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

FIG. 2 is a front view thereof, the rear view being a mirror image thereof;

FIG. 3 is a left view thereof, the right view being a mirror image thereof; and,

FIG. 4 is a top view thereof, the bottom view being a mirror image thereof.

In the drawings, the broken lines are for the purpose of illustrating environment only and form no part of the claimed design.

Claims

The ornamental design for a respirator filter, as shown and described.

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Patent History
Patent number: D732670
Type: Grant
Filed: May 22, 2014
Date of Patent: Jun 23, 2015
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventor: Gary E. Dwyer (Mallorytown)
Primary Examiner: Holly Baynham
Assistant Examiner: Rhea Shields
Application Number: 29/491,577
Classifications
Current U.S. Class: Filter (37) (D24/162)