Portable air filter
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Description
The broken lines in the figures show portions of a portable air filter that form no part of the claim. The end of the hose is shown with a symbolic break in its length. The appearance of any portion of the article beyond the break forms no part of the claim. The stippled shading shown in the drawings represents a contrast in appearance.
Claims
The ornamental design for a portable air filter, as shown and described.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
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Patent History
Patent number: D998127
Type: Grant
Filed: Sep 14, 2020
Date of Patent: Sep 5, 2023
Assignee: FRONT MISSION, LLC (Lewes, DE)
Inventor: Kaiwen Gu (Santa Clara, CA)
Primary Examiner: Amy C Wierenga
Assistant Examiner: Kathryn Elizabeth Zieno
Application Number: 29/750,419
Type: Grant
Filed: Sep 14, 2020
Date of Patent: Sep 5, 2023
Assignee: FRONT MISSION, LLC (Lewes, DE)
Inventor: Kaiwen Gu (Santa Clara, CA)
Primary Examiner: Amy C Wierenga
Assistant Examiner: Kathryn Elizabeth Zieno
Application Number: 29/750,419
Classifications
Current U.S. Class:
Filter (D23/365)