US PATENT SUBCLASS 409 / 128
.~.~.~.~ Photocell

Current as of: June, 1999
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409 /   HD   GEAR CUTTING, MILLING, OR PLANING

64  DF  MILLING {29}
125  DF  .~ Templet, tracer, or cutter {2}
126  DF  .~.~ Tracer {2}
127  DF  .~.~.~ Adapted to trigger electrical energy {1}
128.~.~.~.~ Photocell

DEFINITION

Classification: 409/128

Photocell:

(under subclass 127) Subcombinational apparatus or method wherein the control of electricity is done in response to the degree of illumination.