US PATENT SUBCLASS 175 / 432
.~.~.~.~ With support detail

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

327  DF  BIT OR BIT ELEMENT {21}
425  DF  .~ Specific or diverse material {3}
426  DF  .~.~ Insert {2}
428  DF  .~.~.~ Preformed cutting element (e.g., compact) mounted on a distinct support (e.g., blank, stud, shank) {5}
432.~.~.~.~ With support detail

DEFINITION

Classification: 175/432

With support detail:

(under subclass 428) Structure in which significance is attributed to a structural feature of the backing or substructure portion.