Screw propeller
Latest Guangzhou Ehang Intelligent Technology Co., Ltd. Patents:
Description
Claims
The ornamental design for a screw propeller, as shown and described.
Referenced Cited
U.S. Patent Documents
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Patent History
Patent number: D792318
Type: Grant
Filed: Feb 29, 2016
Date of Patent: Jul 18, 2017
Assignee: Guangzhou Ehang Intelligent Technology Co., Ltd. (Guangzhou, Guangdong)
Inventors: Hao Du (Guangzhou), Zhiyi Li (Guangzhou), Chunming Ma (Guangzhou)
Primary Examiner: George D. Kirschbaum
Assistant Examiner: Clese Moore, Jr.
Application Number: 29/556,292
Type: Grant
Filed: Feb 29, 2016
Date of Patent: Jul 18, 2017
Assignee: Guangzhou Ehang Intelligent Technology Co., Ltd. (Guangzhou, Guangdong)
Inventors: Hao Du (Guangzhou), Zhiyi Li (Guangzhou), Chunming Ma (Guangzhou)
Primary Examiner: George D. Kirschbaum
Assistant Examiner: Clese Moore, Jr.
Application Number: 29/556,292
Classifications
Current U.S. Class:
Propeller (D12/214)