US PATENT SUBCLASS 12 / 53.8
.~.~.~ Reciprocating expander

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

51  DF  UPPER MACHINES {11}
53.1  DF  .~ Assembled shoe shaping {5}
53.6  DF  .~.~ By expander only {2}
53.8.~.~.~ Reciprocating expander

DEFINITION

Classification: 12/53.8

(under subclass 53.6) Machines in which the expanding means is operated by a reciprocating member extending therein.