US PATENT SUBCLASS 12 / 114.4
.~.~ Fluid expander

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

103  DF  TOOLS {7}
114.2  DF  .~ Interiorly stretching assembled shoes {4}
114.4.~.~ Fluid expander

DEFINITION

Classification: 12/114.4

(under subclass 114.2) Shoe stretchers in which the expanding action is exerted by a fluid medium.