US PATENT SUBCLASS 396 / FOR 971
.~.~ Internally heated (354/353)

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

FOR 969  DF  BURNISHING (354/351) {1}
FOR 970  DF  .~ Rotary machine (354/352) {1}
FOR 971.~.~ Internally heated (354/353)

DEFINITION

Classification: 396/FOR.971

Internally heated: (354/353)

Subject matter under subclass FOR 970 including means to raise the temperature of a rotary tool.