US PATENT SUBCLASS 451 / 15
.~.~.~ Manually adjustable

Current as of: June, 1999
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451 /   HD   ABRADING

1  DF  PRECISION DEVICE OR PROCESS - OR WITH CONDITION RESPONSIVE CONTROL {7}
11  DF  .~ With feeding of tool or work holder {6}
14  DF  .~.~ Screw actuated {2}
15.~.~.~ Manually adjustable

DEFINITION

Classification: 451/15

Manually adjustable:

(under subclass 14) Subject matter in which the position of the helical means is set by the hand of the operative.