US PATENT SUBCLASS 408 / 704
DRILLING SMALL HOLES

Current as of: June, 1999
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408 /   HD   CUTTING BY USE OF ROTATING AXIALLY MOVING TOOL

704DRILLING SMALL HOLES

DEFINITION

Classification: 408/704

(under the class definition) A step or apparatus particularly adapted to cut openings into work, which openings are of unusually narrow cross-section.