US PATENT SUBCLASS 105 / 307
.~.~.~ Screw or worm

Current as of: June, 1999
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105 /   HD   RAILWAY ROLLING STOCK

238.1  DF  SPECIAL CAR BODIES {11}
239  DF  .~ Dumping {14}
286  DF  .~.~ Door actuators {10}
307.~.~.~ Screw or worm

DEFINITION

Classification: 105/307

(under subclass 286) Door actuators comprising a screw or worm device.