US PATENT SUBCLASS 33 / 381
.~.~.~.~ Plural


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

300  DF  INDICATOR OF DIRECTION OF FORCE TRAVERSING NATURAL MEDIA {23}
365  DF  .~ Level or plumb, terrestrial gravitation responsive {9}
377  DF  .~.~ Liquid type, upper surface utilizing {2}
379  DF  .~.~.~ Bubble {5}
381.~.~.~.~ Plural {2}
382  DF  .~.~.~.~.~> Coacting at an angle
383  DF  .~.~.~.~.~> Relatively adjustable


DEFINITION

Classification: 33/381

(under subclass 379) Device including a plurality of said nearly filled receptacles.