US PATENT SUBCLASS 440 / 47
.~ Having means to increase fluid drive means efficiency

Current as of: June, 1999
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440 /   HD   MARINE PROPULSION

38  DF  JET DRIVE {5}
47.~ Having means to increase fluid drive means efficiency

DEFINITION

Classification: 440/47

Having means to increase fluid drive efficiency:

(under subclass 38) Device wherein the discharge pipe can have means to improve the fluid flow or the flow passage has additional means to improve flow.