US PATENT SUBCLASS 144 / 202
.~ Chisel pair

Current as of: June, 1999
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144 /   HD   WOODWORKING

198.1  DF  TENONING MACHINE {4}
202.~ Chisel pair

DEFINITION

Classification: 144/202

Chisel pair:

(under subclass 198.1) Machine with oppositely-placed chisel-cutters which simultaneously cut both shoulders of the tenon.