US PATENT SUBCLASS 180 / 7.4
.~ Propeller type
Current as of:
June, 1999
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180 /
HD
MOTOR VEHICLES
7.1
DF
SPECIAL DRIVING DEVICE
{6}
7.4
.~ Propeller type
DEFINITION
Classification: 180/7.4
Propeller type:
(under subclass 7.1) Motor vehicle wherein the special driving device is a rotary fluid reaction type impeller.
SEE OR SEARCH THIS CLASS, SUBCLASS:
182+, for vehicles driven by this type of device and also equipped with runners.