US PATENT SUBCLASS 144 / 77
.~ Chisel reverser

Current as of: June, 1999
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144 /   HD   WOODWORKING

75  DF  MORTISING MACHINE HAVING CHISEL {5}
77.~ Chisel reverser

DEFINITION

Classification: 144/77

Chisel reverser:

(under subclass 75) Mortising machine having means for reversing the chisel in order to square the mortise at each end.