US PATENT SUBCLASS 81 / 57.22
.~.~.~ Multiple drive or driven means

Current as of: June, 1999
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81 /   HD   TOOLS

52  DF  WRENCH, SCREWDRIVER, OR DRIVER THEREFOR {27}
54  DF  .~ Machine {10}
57  DF  .~.~ Gear-operated {9}
57.22.~.~.~ Multiple drive or driven means {1}
57.23  DF  .~.~.~.~> With magazine

DEFINITION

Classification: 81/57.22

(under subclass 57) Wrench or screwdriver comprising more than one drive means to actuate a single workpiece, a single drive means to actuate plural workpieces, or more than one

drive means to actuate a plurality of workpieces.