US PATENT SUBCLASS 378 / 159
.~.~ Contoured

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

145  DF  BEAM CONTROL {6}
156  DF  .~ Filter {3}
159.~.~ Contoured

DEFINITION

Classification: 378/159

Contoured:

(under subclass 156) Subject matter wherein the filter is of nonuniform thickness.