US PATENT SUBCLASS 33 / 703
.~ Environmental isolation

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

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

DEFINITION

Classification: 33/703

Environmental isolation:

(under subclass 700) Subject matter which includes structure for protecting the distance measuring means from adverse physical conditions which may affect the measurement being made.