Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797993 | Method of making electroweldable sockets | David M. A. Kenworthy, Edwin A. W. Dunkey | 1989-01-17 |
| 4795877 | Fault detecting device for welded pipe joints | Brian Glaves, David M. A. Kenworthy, David A. Bilton | 1989-01-03 |