USD232170S - Twin engine helicopter - Google Patents

Description

United States Patent Ofifice 232,17

Patented July 23, 1974 TWIN ENGINE HELICOPTER John Diamond, West Chester, and David Walter Harry and John Jacob Schneider, Media, Pa., assignors to The Boeing Company, Seattle, Wash.

Filed Dec. 26, 1972, Ser. No. 318,290

Term of patent 14 years Int. Cl. D12-07 US. Cl. D1273 Del. 232,170

PAGE 5 FIG. 1 is a perspective view of the twin engine heli- Copter;

FIG. 2 is a top plan view thereof, with the rotor blades broken away for clarity;

FIG. 3 is a side elevation view thereof;

FIG. 4 is a front elevation view of the helicopter; and

FIG. 5 is a rear elevation view thereof.

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

References Cited UNITED STATES PATENTS D. 193,370 8/1962 Mertens D12-73 ALAN P. DOUGLAS, Primary Examiner

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