Patent classifications
G
PHYSICS
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G01
MEASURING; TESTING
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G01V
GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
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5/00
Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
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G01V5/04
specially adapted for well-logging
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G01V5/08
using primary nuclear radiation sources or X-rays
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G01V5/104
and detecting secondary Y-rays as well as reflected or back-scattered neutrons
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