US PATENT SUBCLASS 227 / 68
.~.~ Driver also acting as punch

Current as of: June, 1999
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227 /   HD   ELONGATED-MEMBER-DRIVING APPARATUS

64  DF  WITH MEANS TO SHAPE WORK OR CUT PRODUCT {4}
67  DF  .~ Means to form opening in work for member {4}
68.~.~ Driver also acting as punch

DEFINITION

Classification: 227/68

(under subclass 67) Device wherein said shaping means comprises a driver* which is adapted to penetrate work.