USD146984S - Piasecki helicopter - Google Patents

Description

Des. 146,984

June 24, 1947. I

1 F. N. PIASECKI HELICOPTER Filed March 7, 1946 2 Sheets-Sheet 1 ieaezeziw' June 24, 1947 F. N. PIASECKI Des. 146,984

HELICOPTER Filed March 7, 1946 2 Sheets-Sheet 2 W W a h Patented June 24, 1947 UNITED Des. 146,984

STATES PATENT OFFICE DESIGN FOR A HELICOPTER Frank N. Piasecki, Lansdowne, Pa., assignor to Piasccki Helicopter Corporation To all whom it may concern:

Be it known that I, Frank N. Piasecki, a citizen of the United States of America, residing at Lansdowne, in the county of Delaware and State of Pennsylvania, have invented a new, original, and ornamenta1 Design for Helicopters, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

Figure l is a side elevational View of a helicopter, showing my new design as it would appear on the ground.

Figure 2 is a front elevational view of the same.

Figure 3 is a rear elevational view of the same.

Figure 4 is a top plan view of the same.

Figure 5 is a partial cross section taken on line 5-5 as shown in Figure 1.

I claim:

The ornamental design for a helicopter, as shown.

FRANK N. PIASECKI.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date D. 139,021 Lewis Oct. 3, 1944 2,233,747 Riedl Mar. 4, 1941 2,273,303 Waldron Feb. 17, 1942 2,384,445 Apostolescu Sept. 11, 1945 FOREIGN PATENTS Number Country Date 155,974 Switzerland Oct. 1, 1932

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