Helicopter

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

FIG. 1 is a perspective view of the helicopter;

FIG. 2 is in left side view of the helicopter;

FIG. 3 is a right side view of the helicopter;

FIG. 4 is a front view of the helicopter;

FIG. 5 is a rear view of the helicopter;

FIG. 6 is a top view of the helicopter; and,

FIG. 7 is a bottom view of the helicopter.

Patent	Priority	Assignee	Title
D665720,	Jan 11 2012	Sikorsky Aircraft Corporation	Rotary wing aircraft
D708273,	Nov 20 2012		Remotely-controlled, impact-resistant model helicopter
D894814,	Sep 27 2019	Textron Innovations Inc	Aircraft
D896730,	Sep 27 2019	Textron Innovations Inc	Combined aircraft fuselage and empennage

Patent	Priority	Assignee	Title
3173632,
3778011,
4114309,	Dec 13 1976	Mattel, Inc.	Toy helicopter
4200252,	Dec 21 1977	McDonnell Douglas Helicopter Company	Helicopter antitorque system using circulation control
4765567,	Mar 10 1987	Tech Serv, Inc.	Helicopter target
5836545,	Apr 25 1994	ARLTON, PAUL E	Rotary wing model aircraft
6732973,	Nov 07 2001	Rehco, LLC	Stabilizer for a propeller related vehicle
7178758,	Nov 07 2001	Rehco, LLC	Propellers and propeller related vehicles
168652,
D284594,	Feb 09 1984	FISHER - PRICE, INC , A DE CORP	Toy helicopter
D294605,	Oct 24 1985	Takara Co., Ltd.	Reconfigurable toy helicopter
D361054,	Jun 16 1994		Helicopter
D421279,	Apr 12 1999		Toy helicopter
D425853,	Apr 17 1998	AGUSTA S P A	Helicopter
D467861,	Nov 06 2001	General Helicopter, Inc.; GENERAL HELICOPTER, INC	Helicopter
D503198,	Apr 15 2002	Rehco LLC	Toy helicopter
D524228,	May 31 2005	Sikorsky Aircraft Corporation	Rigid coaxial rotor heavy lift helicopter
D524229,	May 30 2005	Sikorsky Aircraft Corporation	Rigid coaxial rotor helicopter with auxiliary propulsion (small)
D524230,	May 31 2005	Sikorsky Aircraft Corporation	Rigid coaxial rotor helicopter with auxiliary propulsion (large)
D524718,	May 31 2005	Sikorsky Aircraft Corporation	Rigid coaxial rotor helicopter with dual auxiliary propulsion
D526269,	May 31 2005	Sikorsky Aircraft Corporation	High speed attack rotorcraft
D544825,	Jan 19 2006	Silverlit Toys Manufactory, Ltd	Helicopter propeller rotor

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Jan 12 2007	ZIMET, NACHMAN	ZIMET, NACHMAN	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	018965	0207	pdf
Jan 12 2007	ZIMET, NACHMAN	DIVON, AVNER	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	018965	0207	pdf
Jan 30 2007		Nachman, Zimet	(assignment on the face of the patent)
Jan 30 2007		Avner, Divon	(assignment on the face of the patent)

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