USD179661S - Helicopter - Google Patents

Description

Des. 179,661 Patented Feb. 5, 1957 United States Patent O we HELICOPTER Paul M. Schroeder, Jr., Fort Worth, Tex., assignor to Bell Aircraft Corporation, Wheatfield, N. Y.

Application December 2, 1955, Serial No. 39,130

Term of patent 14 years (Cl. D71--1) Fig. l is a side elevational view of a helicopter showing my new design;

Fig. 2 is a top plan view thereof;

Fig. 3 is a front elevational view thereof; and

Figs. 4, 5 and 6 are sectional outline views thereof taken about on lines IVVVI, respectively, of Fig. 1.

The side of the helicopter not shown in the drawings is identical in appearance with that illustrated in Pig. 1.

The essential features of my design reside in those shown in full lines.

I claim:

The ornamental design for a helicopter, as shown and described.

Des. 179,661

PAGE 2 References Cited in the file of this patent UNITED STATES PATENTS Alex Aug. 30, 1949 Alex Jan. 4, 1955 OTHER REFERENCES Washington Post & Times Herald, November 5, 1954, Navy Sea Dart Plane.

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