US PATENT SUBCLASS 266 / 95
.~.~.~.~ By float means

Current as of: June, 1999
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266 /   HD   METALLURGICAL APPARATUS

78  DF  WITH CONTROL MEANS RESPONSIVE TO SENSED CONDITION {6}
90  DF  .~ With means responsive to condition of treated material {2}
92  DF  .~.~ By means sensing position of work {2}
94  DF  .~.~.~ By means sensing level of molten liquid {1}
95.~.~.~.~ By float means

DEFINITION

Classification: 266/95

(under subclass 94) Device wherein the surface- sensing means incorporates a buoyant-sensing means.