US PATENT SUBCLASS 204 / 228.8
.~.~.~ Workpiece presence, position, or movement sensing means

Current as of: June, 1999
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204 /   HD   CHEMISTRY: ELECTRICAL AND WAVE ENERGY

193  DF  APPARATUS {5}
194  DF  .~ Electrolytic {11}
228.1  DF  .~.~ With current, voltage, or power control means responsive to sensed condition {8}
228.8.~.~.~ Workpiece presence, position, or movement sensing means

DEFINITION

Classification: 204/228.8

Workpiece presence, position, or movement sensing means:

(under subclass 228.1) Apparatus having means for sensing presence, position, or movement of a workpiece.