US PATENT SUBCLASS 33 / 377
.~.~ Liquid type, upper surface utilizing

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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.~.~ Liquid type, upper surface utilizing {2}
378  DF  .~.~.~> Float or piston
379  DF  .~.~.~> Bubble {5}

DEFINITION

Classification: 33/377

(under subclass 365) Device including a body of liquid having an upper surface indicative of terrestrial gravitational direction, this upper surface either serving to indicate or to control an indicator.

SEE OR SEARCH THIS CLASS, SUBCLASS:

304+, for congealing or solidifying substance used to determine borehole inclination.

367, for a level of the plural, interconnected, separable, liquid columns type.

396, for a pendulum type of level or plumb wherein liquid is utilized for its buoyant effect in supporting the pendulum.