Screw propeller

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Description

FIG. 1 is a perspective view of the screw propeller;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view, the left side being a mirror image thereof; and,

FIG. 5 is a top view thereof, the bottom side being a mirror image thereof.

Claims

The ornamental design for a screw propeller, as shown and described.

Referenced Cited
U.S. Patent Documents
D41244 March 1911 Heath
1623420 April 1927 Leinweber
1786644 December 1930 Davis
1831373 November 1931 Squires
1905891 April 1933 Blanchard
2116055 May 1938 Weichwald
D121201 June 1940 Fischer
D132376 May 1942 Munk
2482375 September 1949 Sensenich
3461966 August 1969 Biermann
D252390 July 17, 1979 Voisard
D761184 July 12, 2016 Xiao
20090220347 September 3, 2009 Ball
20120189457 July 26, 2012 Occhipinti
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
Classifications
Current U.S. Class: Propeller (D12/214)