US PATENT SUBCLASS 173 / 191
.~.~.~ Having screw threads
Current as of:
June, 1999
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173 /
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TOOL DRIVING OR IMPACTING
39
DF
WITH MEANS TO ADJUST POSITION OF AXIS OF TOOL ADVANCE
{3}
42
DF
.~ Plural adjustments {1}
190
DF
.~.~ Powered by motor or mechanism {4}
191
.~.~.~ Having screw threads
DEFINITION
Classification: 173/191
Having screw threads:
(under subclass 190) Apparatus wherein the mechanism has continuous helical grooves.
