GB0921954D0
Systems and methods for using a passageway through subterranean strata
Abstract
This record has no abstract on file.
Term
Projected expiry 16 December 2029.
- Priority
- Filed
- Published
- Today
- Projected expiry
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| CN117703259A | Cited by | China | Search report |
272 members in 15 offices
Priority claims4
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|---|---|---|---|
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| 0823194 | United Kingdom | A | |
| GB0823194 | – | – | – |
| GB20080023194 | – | – | – |
Members272
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Showing 100 of 272
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| Patent ceased through non-payment of renewal feeCeasedPCNP | PCNP |
Numbers
- Publication, DOCDB
- 0921954
- Publication, EPODOC
- GB0921954D
- Application
- 9219544
- Application, DOCDB
- 0921954
- Application, EPODOC
- GB20090021954
Titles
- English
- Systems and methods for using a passageway through subterranean strata
Classification
- CPC, 7
- E21B33/138
- B02C13/18
- E21B23/14
- E21B29/00
- E21B29/06
- E21B21/003
- E21B21/103