USD155360S - Piaseck! helicopter - Google Patents

Description

Sept, 27, 1949. F. N. PzAsEcKi Des. 155,360

HELICOPTER s sheds-sheet 1 Filed April 30, 1948 NTOR Sept. 27, 1949.

Filed April 30, l948 F. N. PlASECKl HELICOPTER FIG. 3

Des. 155,360

5 Sheets-Sheet .2

F. N. PIASECKI Des. 155,360

HELICOPTER Sept. 27, 1949.

3 Sheets-Sheet 5 Filed April 30, 1948 INVEN R Patented Sept. 27, 1949 Des. 155,360

UNITED STATES PATENT OFFICE DESIGN FOR A HELICOPTER Frank N. Piasecki, Lansdowne, Pa., assignor to The Piasecki Helicopter Corporation, Morton,

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 ornamental Design for Helicopters, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

Figure 1 is a side elevational view of my new design for a helicopter.

Figure 2 is a top plan view of the same.

Figure 3 is a front elevational view of the same.

Figure 4 is a rear elevational view of the same.

Figure 5 is a top perspective view of the same.

The dotted lines shown in the several drawing figures are for illustrative purposes only.

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

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 D. 144,401 Lewis Apr. 9, 1946 D. 146,984 Piasecki June 24, 1947

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