US PATENT SUBCLASS 451 / 375
.~.~.~.~ Drill

Current as of: June, 1999
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451 /   HD   ABRADING

364  DF  WORK HOLDER {10}
365  DF  .~ Clamp {8}
367  DF  .~.~ Edge tool {8}
374  DF  .~.~.~ Rotary cutter {1}
375.~.~.~.~ Drill {1}
376  DF  .~.~.~.~.~> Pattern control

DEFINITION

Classification: 451/375

Drill:

(under subclass 374) Clamping rotary edge tool holder especially adapted for securing a drill bit in position while being abraded.