USD189705S - Helicopter - Google Patents

Description

United States Patent 0 Hce Des-189,705

Patented Jan. 31, 1961 HELICOPTER Irven H. Culver, Burbank, and Donald E. Walters, Calabasas, Calif., assignors to Lockheed Aircraft Corporation, Burbank, Calif.

Filed Feb. 3, 1960, Ser. No. 59,252

Term of patent 14 years (Cl. D711) Des. 189,705

PAGE 2 Figure l is a perspective view of a helicopter embody- References Cited in the file of this patent mg new desl'gn; UNITED STATES PATENTS Figure 2 is a front elevational view thereof; Figure 3 is a top plan view thereof; and

D. 150,181 Wibault July 6, 1948 OTHER REFERENCES Aviation Week, I an. 13, 1958, page 99, Chance Vought Aircraft Co., F8U-l.

Figure 4 is a side elevational view thereof.

The dominant features of our design reside in those portions shown in full lines.

We claim: The ornamental design for a helicopter, substantially as shown and described.

Janes All the Worlds Aircraft, 1958-1959, page 256, Beechcraft Jet Mentor and F50 Twin-Bonanza.

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