US PATENT SUBCLASS 125 / 13.02
.~.~ Having internal cutting edge

Current as of: June, 1999
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125 /   HD   STONE WORKING

12  DF  SAWING {6}
13.01  DF  .~ Rotary {4}
13.02.~.~ Having internal cutting edge

DEFINITION

Classification: 125/13.02

Having internal cutting edge:

(under subclass 13.01) Subject matter including a rotary blade having an opening with a cutting edge on the internal edge of the opening, the workpiece being projected into the opening for cutting.

SEE OR SEARCH CLASS

451, Abrading,

180, for an abrading machine in which grinding is done by the internal peripheral face of an annular tool having rotary motion.