FR834624A
Expired / Lapsed
FR
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Process for unclogging devices for collecting water during drilling in aquiferous sands, an improved device allowing in particular the application of this process and perforated walls that can be used in this device
Assignee: Robert Joffet
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Filing: 1937-07-30
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Granted: 1938-11-25
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Expires: 1957-07-30
Abstract
No abstract record available.
Inventors
- 👤 Robert Joffet
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-03 18:16
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/08; E21B43/086; E21B43/088
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