US PATENT SUBCLASS 212 / 316
.~ Having plural trolleys

Current as of: June, 1999
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212 /   HD   TRAVERSING HOISTS

312  DF  TRAVELING BRIDGE {13}
316.~ Having plural trolleys

DEFINITION

Classification: 212/316

Having plural trolleys:

(under subclass 312) Subject matter wherein two trolleys* are provided which are concurrently supported for movement along the track or guide of the traveling bridge.