US Patent Class 440-- MARINE PROPULSION-- MAIN HEADINGS

US Patent Class 440
MARINE PROPULSION-- Main Headings

		CLASS NOTES
1	DF	MEANS TO CONTROL THE SUPPLY OF ENERGY RESPONSIVE TO A SENSED CONDITION
2	DF	WITH INDICATOR
3	DF	DIVERSE ENGINE MEANS
4	DF	PLURAL ENGINES WITH SINGLE PROPELLING MEANS
5	DF	HYDRAULIC FLUID DRIVE FOR PROPELLING MEANS
6	DF	ELECTRIC DRIVE FOR PROPELLING MEANS {1}
8	DF	WIND DRIVEN MOTORS
9	DF	WAVE POWERED PROPELLING MEANS {1}
11	DF	POWERED FROM LAND VEHICLE SUPPORTED BY VESSEL {1}
12.5	DF	SELF-PROPELLED VEHICLE HAVING LAND AND WATER PROPULSION MEANS (E.G., AMPHIBIOUS VEHICLE) {5}
13	DF	OSCILLATING PROPELLING MEANS {3}
21	DF	OPERATOR POWERED DRIVE FOR PROPELLING MEANS {6}
33	DF	TOWING {3}
37	DF	AIR PROPELLED BOAT
38	DF	JET DRIVE {5}
48	DF	HELICAL SCREW
49	DF	SCREW PROPELLER {12}
84	DF	ENGINE, MOTOR, OR TRANSMISSION CONTROL MEANS {3}
88	DF	MEANS FOR HANDLING ENGINE FLUIDS {1}
90	DF	PADDLE WHEEL {2}
94	DF	UPRIGHT REMAINING ORBITING PADDLES
95	DF	FLEXIBLE ENDLESS PROPELLING MEANS {1}
98	DF	BUOYANT PROPELLING MEANS {2}
101	DF	OAR OR PADDLE {2}
111	DF	INBOARD ENGINE MOUNT {1}
113	DF	MISCELLANEOUS
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		CROSS-REFERENCE ART COLLECTION
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900	DF	OUTBOARD MOTORS AND OUTDRIVES