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PROSERV WELLDECO AS
| PROSERV WELLDECO AS Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20090166026 | Jar device for use in coil tubing drilling - The invention relates to a jar operated by fluid pressure, specially designed for use in drilling or maintenance operations carried out in oil or gas wells. The jar comprises a first ( | 07-02-2009 |