Compagnie Generale pour les Developpements Operationnels des Richesses sour-Marines (Doris) S.A.

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Paris, FR

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for internally checking well pipe bore and for automatica...
- Patent number 3,943,982
- Issue date Mar 16, 1976
- Compagnie Francaise des Petroles, S.A.
- Michel G. Lecordier
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...