US PATENT SUBCLASS 33 / 383
.~.~.~.~.~ Relatively adjustable

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  DF  .~.~.~.~ Plural {2}
383.~.~.~.~.~ Relatively adjustable

DEFINITION

Classification: 33/383

(under subclass 381) Device wherein the receptacles are adjustable in their relationship to each other.