US PATENT SUBCLASS 60 / 904
PROPELLER OR AIR PLANE SYSTEM

Current as of: June, 1999
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60 /   HD   POWER PLANTS

904PROPELLER OR AIR PLANE SYSTEM

DEFINITION

Classification: 60/904

PROPELLER OR AIRPLANE SYSTEM:

Systems that are disclosed as controlling the pitch of a propeller or as operating an element of an airplane.