US PATENT SUBCLASS 352 / 227
.~ With pressure plate tension control

Current as of: June, 1999
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352 /   HD   OPTICS: MOTION PICTURES

221  DF  GATES {9}
227.~ With pressure plate tension control

DEFINITION

Classification: 352/227

(under subclass 221) Subject matter in which means are provided to adjust the pressure applied to the motion picture film by the pressure plate.