inflatable sealing means

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Patents Grantslast 30 patents

Information Patent Grant
Tunnel adaptive lining structure in complex environment and constru...
- Patent number 11,499,427
- Issue date Nov 15, 2022
- China Institute of Water Resources and Hydropower Research
- Xiaogang Wang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Advancement of pipe elements in the ground
- Patent number 8,231,306
- Issue date Jul 31, 2012
- Stefan Trümpi
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method of connection
- Patent number 5,489,164
- Issue date Feb 6, 1996
- Colebrand Limited
- Klaus N. Tusch
- E04 - BUILDING
Information Patent Grant
2333826
- Patent number 2,333,826
- Issue date Nov 9, 1943
- E04 - BUILDING