| 11473384 |
Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms |
Harry McGraw, Leslie M. Bland, Daniel S. Bangert, Mark F. Gravouia |
2022-10-18 |
| 10851605 |
Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms |
Harry McGraw, Leslie M. Bland, Daniel S. Bangert, Mark F. Gravouia |
2020-12-01 |
| 10253587 |
Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms |
Harry McGraw, Leslie M. Bland, Daniel S. Bangert, Mark F. Gravouia |
2019-04-09 |
| 9851038 |
Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms |
Harry McGraw, Leslie M. Bland, Daniel S. Bangert, Mark F. Gravouia |
2017-12-26 |
| 9194525 |
Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms |
Harry McGraw, Leslie M. Bland, Daniel S. Bangert, Mark F. Gravouia |
2015-11-24 |
| 8707979 |
Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms |
Harry McGraw, Leslie M. Bland, Daniel S. Bangert, Mark F. Gravouia |
2014-04-29 |
| 8622078 |
Apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms |
Harry McGraw, Leslie M. Bland, Daniel S. Bangert, Mark F. Gravouia |
2014-01-07 |
| 8333211 |
Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms |
Harry McGraw, Leslie M. Bland, Daniel S. Bangert, Mark F. Gravouia |
2012-12-18 |