US PATENT SUBCLASS 210 / 91
.~ Position or extent of motion

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

85  DF  WITH ALARM, INDICATOR, REGISTER, RECORDER, SIGNAL OR INSPECTION MEANS {7}
91.~ Position or extent of motion

DEFINITION

Classification: 210/91

(under subclass 85) Apparatus comprising means which gives information as to the position of a movable or adjustable part of the apparatus.