US PATENT SUBCLASS 76 / 81.2
.~.~.~ By threaded means

Current as of: June, 1999
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76 /   HD   METAL TOOLS AND IMPLEMENTS, MAKING

*  DD  TOOL SHARPENERS {4}
81  DF  .~ Stropping devices {5}
81.1  DF  .~.~ Under tension {1}
81.2.~.~.~ By threaded means

DEFINITION

Classification: 76/81.2

(under subclass 81.1) Device wherein the tensioning means includes a helical screw operator.