Underwater propulsion device
Description
The broken line subject matter in
Claims
The ornamental design for an underwater propulsion device, as shown and described.
Referenced Cited
U.S. Patent Documents
Other references
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Patent History
Patent number: D978766
Type: Grant
Filed: Feb 25, 2022
Date of Patent: Feb 21, 2023
Inventors: Jiancang Wei (Tianjin), Shuailong Wang (Tianjin), Chunjiang Tian (Tianjin), Canrong Lin (Tianjin)
Primary Examiner: Cary M Robinson
Assistant Examiner: Adam C Mager
Application Number: 29/828,423
Type: Grant
Filed: Feb 25, 2022
Date of Patent: Feb 21, 2023
Inventors: Jiancang Wei (Tianjin), Shuailong Wang (Tianjin), Chunjiang Tian (Tianjin), Canrong Lin (Tianjin)
Primary Examiner: Cary M Robinson
Assistant Examiner: Adam C Mager
Application Number: 29/828,423
Classifications
Current U.S. Class:
Submersible (D12/308)