FR855599A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Method and devices for measuring quantities inside a borehole, in particular for studying the layers crossed by this borehole
Assignee: Services Petroliers Schlumberger SA
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Filing: 1938-12-16
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Granted: 1940-05-15
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Expires: 1958-12-16
Abstract
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FR
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google_patents
Last Synchronized
2026-10-23 12:30
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/20
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