US PATENT SUBCLASS 81 / 57.11
.~.~.~ With motor

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}
57.11.~.~.~ With motor {3}
57.12  DF  .~.~.~.~> Oblique angle drive
57.13  DF  .~.~.~.~> Right angle drive
57.14  DF  .~.~.~.~> Parallel axis drive

DEFINITION

Classification: 81/57.11

(under subclass 57) Wrench or screwdriver provided with motor means designed to impart motion to the wrench or screwdriver.