US PATENT SUBCLASS 73 / 1.65
.~.~ Dead weight type

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

1.01  DF  INSTRUMENT PROVING OR CALIBRATING {13}
1.57  DF  .~ Fluid pressure {7}
1.65.~.~ Dead weight type

DEFINITION

Classification: 73/1.65

Dead weight type:

(under subclass 1.57) Subject matter including a reference pressure source comprising a known weight acting as a sole force or pressure on a known area.