US PATENT SUBCLASS 144 / 220
.~ Frusto-conical


Current as of: June, 1999
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144 /   HD   WOODWORKING

218  DF  ROTARY CUTTER {22}
220.~ Frusto-conical


DEFINITION

Classification: 144/220

Frusto-conical:

(under subclass 218) Rotary cutter in the form of an inverted cone.

(1) Note. The cutter of this subclass may be used for cutting a dovetail in the edge of a board.