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Publication numberUSD234350 S
Publication typeGrant
Publication dateFeb 18, 1975
Filing dateAug 2, 1972
Publication numberUS D234350 S, US D234350S, US-S-D234350, USD234350 S, USD234350S
InventorsFlight International
Original AssigneeUnited Aircraft Corporation
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Helicopter with coaxial rotors
US D234350 S
Abstract  available in
Images(5)
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Claims  available in
Description  (OCR text may contain errors)

HELICOPTER WITH COAXIAL ROTORS Filed Aug. 2, 1972, Ser. No. 277,204

Term of patent 14 years Int Cl D12-07 Rudolph W. Beckett, Jr., Bethan Conn., assignor to United Aircraft Corporation, East Hartford, Conn.

U.S. Cl. D12-74 United States Patent Des. 234,350

PAGE 5 References Cited UNITED STATES PATENTS FIG. 1 is a front elevation view of my helicopter. FIG. 2 is a side elevation view of my helicopter.

FIG. 3 is an elevation view of the other side of my helicopter.

43 22 11 DD S O kit a me ps am PP 51 56 99 11 000 1 24 54 82 i1 79 11 DD FIG. 4 is a top plan view of my helicopter.

FIG. 5 is a rear elevation view of my helicopter. OTHER REFERENCES I 61mm: Flight International, April 6, 1972, p. 473, Sikorsky 5-69 helicopter at lower right of page.

The ornamental design of a helicopter with coaxial rotors, substantially as shown.

ALAN P. DOUGLAS, Primary Examiner

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