US PATENT SUBCLASS 378 / 160
.~ Shutter or chopper

Current as of: June, 1999
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378 /   HD   X-RAY OR GAMMA RAY SYSTEMS OR DEVICES

145  DF  BEAM CONTROL {6}
160.~ Shutter or chopper

DEFINITION

Classification: 378/160

Shutter or chopper:

(under subclass 145) Subject matter including means which may be rapidly opened or closed to completely block or pass an

X-ray beam.