US PATENT SUBCLASS 338 / 151
.~.~.~ With liquid contact

Current as of: June, 1999
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338 /   HD   ELECTRICAL RESISTORS

68  DF  MECHANICALLY VARIABLE (E.G., RHEOSTAT) {24}
118  DF  .~ Movable contact electrically adjustable over length of resistance element {21}
150  DF  .~.~ Resistance element moves {2}
151.~.~.~ With liquid contact

DEFINITION

Classification: 338/151

(under subclass 150) Subject matter wherein the contact is a liquid disposed in structure such as a tank or trough for restraining its flow; the resistance element having a portion in the liquid or engaging the surface of the liquid, the portion being changed with movement of the element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

44, for resistors responsive to change in inclination, and which have a liquid contact.

94, for resistors whose element is adjustably short-circuited, and including a liquid contact.

156, for resistors having a liquid contact.