Filter
Description
The broken lines and all areas adjacent to solid lines depict portions of the filter that form no part of the claim.
Claims
The ornamental design for a filter, as shown and described.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
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D894329 | August 25, 2020 | Qiang |
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Patent History
Patent number: D943707
Type: Grant
Filed: Dec 5, 2019
Date of Patent: Feb 15, 2022
Inventor: Zhigang Du (Tianjin)
Primary Examiner: Karen S Acker
Assistant Examiner: Jonathan E Fiencke
Application Number: 29/716,010
Type: Grant
Filed: Dec 5, 2019
Date of Patent: Feb 15, 2022
Inventor: Zhigang Du (Tianjin)
Primary Examiner: Karen S Acker
Assistant Examiner: Jonathan E Fiencke
Application Number: 29/716,010
Classifications
Current U.S. Class:
Filter Or Strainer (2) (D23/209)