US PATENT SUBCLASS 33 / 820
.~.~.~.~ Electrical

Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

700  DF  DISTANCE MEASURING {13}
783  DF  .~ Opposed contacts {10}
813  DF  .~.~ Micrometer {10}
818  DF  .~.~.~ With additional indicator {2}
820.~.~.~.~ Electrical

DEFINITION

Classification: 33/820

Electrical:

(under subclass 818) Subject matter wherein the indicating means includes a transducer which is responsive to the contact member movement for producing in an electrical circuit an indication of the distance between the contact members.