US PATENT SUBCLASS 175 / 416
.~.~ Noncircular bore cutter

Current as of: June, 1999
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175 /   HD   BORING OR PENETRATING THE EARTH

327  DF  BIT OR BIT ELEMENT {21}
414  DF  .~ Impact or percussion type {5}
416.~.~ Noncircular bore cutter

DEFINITION

Classification: 175/416

(under subclass 414) Apparatus in which the bit is formed so as to normally cut a hole which is noncircular in cross section.

(1) Note. The bit must be specifically disclosed as cutting a hole of noncircular cross section for classification in this subclass.

SEE OR SEARCH CLASS

408, Cutting by Use of Rotating Axially Moving Tools,

30, for a wood boring bit adapted to bore a noncircular hole.