US PATENT SUBCLASS 76 / 81.1
.~.~ Under tension

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.~.~ Under tension {1}
81.2  DF  .~.~.~> By threaded means

DEFINITION

Classification: 76/81.1

(under subclass 81) Device provided with means for putting the working surface under the proper or desired tautness.

SEE OR SEARCH CLASS

451, Abrading,

490+, for an abrasive sheet holder with means to tension the sheet thereon.