US PATENT SUBCLASS 440 / 50
.~ Variable pitch

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


440 /   HD   MARINE PROPULSION

49  DF  SCREW PROPELLER {12}
50.~ Variable pitch

DEFINITION

Classification: 440/50

Variable pitch:

(under subclass 49) Device wherein the angle of attack of the propeller blades can be changed.