Date	Pat. No.	Description
01/11/44	2,338,751	Folding Wing on Aircraft
04/25/44	2,347,230	Airplane with Nonstalling and Glide Angle Control Characteristics
03/18/47	2,417,725	Combined Flight and Ground Control for Airplanes
04/05/49	D153,331	Airplane
08/09/49	D154,829	Airplane
01/16/51	2,538,224	Wing with Interconnected Flap and Nose Slat
01/08/57	2,776,718	Helicopter Rotor
11/08/60	2,959,373	Convertiplane
02/02/62	3,056,564	Roadable Airplane
06/23/64	3,138,351	Folding Wings on Aircraft
12/01/64	3,159,364	Amphibious Floats with Retraction Means Therfor
01/19/65	3,166,271	Airplane Having Nonstalling and Wingmounted Propellers
02/16/71	3,563,496	Compound Helicopter
05/01/73	3,730,459	Airplane with Floating Wing and Reverse Propeller Thrust
01/11/77	4,002,351	Folding Bicycle
01/01/85	4,491,337	Folding Bicycle
03/21/89	4,813,634	Flying Emergency Ejection Seat
05/29/90	4,928,907	Compound Helicopter With No Tail Rotor
11/26/91	5,057,668	Compound Helicopter With No Tail Rotor
Foreign Patents
09/17/91	P3890751.8-22	Germany - Flying Emergency Ejection Seat
09/16/95	5001000/89	Japan - Flying Emergency Ejection Seat