US PATENT SUBCLASS 144 / 20
.~ Disk cutting and boring

Current as of: June, 1999
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144 /   HD   WOODWORKING

2.1  DF  SPECIAL-WORK MACHINE {34}
20.~ Disk cutting and boring

DEFINITION

Classification: 144/20

Disk cutting and boring:

(under subclass 2.1) Machine particularly adapted to perform two or more operations to cut out a cylindrical blank and to cut the interior thereof to form or enlarge an opening therein.