US PATENT SUBCLASS 367 / 33-- .~.~ Depth recording or control

US PATENT SUBCLASS 367 / 33
.~.~ Depth recording or control

Current as of: June, 1999
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367 /	HD	COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES

14	DF	SEISMIC PROSPECTING {4}
25	DF	.~ Well logging {6}
33		.~.~ Depth recording or control

DEFINITION

Classification: 367/33

Depth recording or control:

(under subclass 25) Subject matter wherein an electric signal representing the location of the detector in the passageway is recorded or utilized by the system.

SEE OR SEARCH CLASS

73, Measuring and Testing,

152.01+, for a well logging, per se, wherein the logging is not a purely electrical test or a purely magnetic test, especially subclasses 152.02+ for a process or an apparatus for borehole formation logging wherein there is a measurement of depth being correlated with another borehole measurement being made and the logging is not a purely electrical test or a purely magnetic test.