Face mask
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Description
The broken lines in the drawings depict portions of the face mask that form no part of the claimed design.
Claims
The ornamental design for a face mask, as shown and described.
Referenced Cited
U.S. Patent Documents
Other references
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Patent History
Patent number: D821568
Type: Grant
Filed: Jan 16, 2017
Date of Patent: Jun 26, 2018
Assignee: BLUEAIR AB (Stockholm)
Inventors: Fredrik Nilsson (Stockholm), Walter Frost (Stockholm)
Primary Examiner: Karen E Kearney
Assistant Examiner: Lilyana Bekic
Application Number: 29/591,044
Type: Grant
Filed: Jan 16, 2017
Date of Patent: Jun 26, 2018
Assignee: BLUEAIR AB (Stockholm)
Inventors: Fredrik Nilsson (Stockholm), Walter Frost (Stockholm)
Primary Examiner: Karen E Kearney
Assistant Examiner: Lilyana Bekic
Application Number: 29/591,044
Classifications
Current U.S. Class:
Mask (D24/110.1)