US PATENT SUBCLASS 200 / 201
.~.~.~ Progressive contacts

Current as of: June, 1999
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200 /   HD   ELECTRICITY: CIRCUIT MAKERS AND BREAKERS

182  DF  LIQUID CONTACT {17}
199  DF  .~ Contact dips (moves relative to container) into the conductive liquid {1}
200  DF  .~.~ Periodic {2}
201.~.~.~ Progressive contacts

DEFINITION

Classification: 200/201

(under subclass 200) Subject matter wherein a number of circuits are to be successively completed in a predetermined sequence, responsive to the relative movement of the contacts and the liquid.