| European Case Law Identifier: | ECLI:EP:BA:1991:T039789.19910308 | ||||||||
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| Date of decision: | 08 March 1991 | ||||||||
| Case number: | T 0397/89 | ||||||||
| Application number: | 84105892.8 | ||||||||
| IPC class: | E21B 7/06 E21B 17/07 |
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| Language of proceedings: | EN | ||||||||
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| Title of application: | Sub for connection in a drill string | ||||||||
| Applicant name: | Dailey Inc. | ||||||||
| Opponent name: | - | ||||||||
| Board: | 3.2.03 | ||||||||
| Headnote: | - | ||||||||
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| Keywords: | Added subject-matter (main and first auxiliary request affirmed; second auxiliary request denied |
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Source: http://www.epo.org/law-practice/case-law-appeals/recent/t890397eu1.html
Date retrieved: 17 May 2021