Copyright © Philip M. Parker, INSEAD. Terms of Use.

| Year | Description |
| 1993 | Invention patented by Anthony D. Elgar, Brian T. Sales, and Adrian S. Parkes on July 5th, 1993. Abstract: A method for abandoning a branch main 1 joined to a fluid-carrying spine main 2 comprises gaining access to the bore of the branch main 1 at an access point and then permanently blocking the bore of the branch main 1 at a blockage point closer to the junction then to the access point. |
| Source: selected by the editor from original sources. | |
Copyright © Philip M. Parker, INSEAD. Terms of Use.