US PATENT SUBCLASS 33 / 705
.~.~ Sealing

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

700  DF  DISTANCE MEASURING {13}
703  DF  .~ Environmental isolation {2}
705.~.~ Sealing

DEFINITION

Classification: 33/705

Sealing:

(under subclass 703) Subject matter wherein the adverse condition is foreign matter which is kept away from the measuring means by a barrier.