USD181850S - Page 2 oj - Google Patents

Description

Des. 181,850

f Unlted States Patent O we Patented Jam 7, 1958 HELICOPTER Luell M. Graham, Fort Worth, Tex., assignor to Bell Aircraft Corporation, Wheatfield, N. Y.

Application January 4, 1956, Serial No. 39,601

Term of patent 14 years (Cl. D7l-1) Des. 181,850

PAGE 3 Fig. 1 is a top plan view of a helicopter, showing my new design;

Fig. 2 is a side elevational view thereof;

Fig. 3 is a front elevational view thereof; and

Fig. 4 is a perspective view thereof.

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

I claim:

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

References Cited in the file of this patent v D. 134,458 D. 135,434 D. 163,928 D. 174,404

UNITED STATES PATENTS Johnson et al Dec. 1, 1942 Woods Apr. 6, 1943 Barnett July 17, 1951 Woods Apr. 5, 1955

Images