US PATENT SUBCLASS 12 / 31.5
.~ Heel-seal forming

Current as of: June, 1999
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12 /   HD   BOOT AND SHOE MAKING

17 R  DF  SOLE MACHINES {23}
31.5.~ Heel-seal forming {1}
31.6  DF  .~.~> Spring heel

DEFINITION

Classification: 12/31.5

(under subclass 17) Machines provided with means to shape that portion of a sole against which a heel is to be abutted.