US PATENT SUBCLASS 33 / 312
.~.~ Electrical telemetering to read-out

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

300  DF  INDICATOR OF DIRECTION OF FORCE TRAVERSING NATURAL MEDIA {23}
304  DF  .~ Borehole direction or inclination {6}
312.~.~ Electrical telemetering to read-out

DEFINITION

Classification: 33/312

(under subclass 304) Device including an electrical telemetering circuit for transmitting an indication of the direction or inclination of the borehole to a receiver.

SEE OR SEARCH THIS CLASS, SUBCLASS:

363, for electrical telemetering circuits utilized in magnetic field responsive devices and see the search notes thereto for the loci of other electrical telemetering circuits in this class.

SEE OR SEARCH CLASS

340, Communications: Electrical,

853.1+, for borehole electrical telemetric means, per se.