Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6068725 | Method of installation of a flexible cured in place lateral seal in an existing main pipeline | John Tweedie, Philip M. Smith, Kerry D. Severs, Kevin P. Murray | 2000-05-30 |
| 6044867 | Method and apparatus for fabricating a flexible lining with flexible collar for lining lateral pipelines | John Tweedie, Philip M. Smith, Kevin P. Murray | 2000-04-04 |
| 6029726 | Apparatus for installing a flexible cured in place lateral seal in an existing main pipeline | John Tweedie, Philip M. Smith, Kerry D. Severs, Kevin P. Murray | 2000-02-29 |
| 5915419 | Cured in place lateral seal for relining of pipelines and method of manufacture | John Tweedie, Philip M. Smith, Kevin P. Murray | 1999-06-29 |
| 5044405 | Method and apparatus for repair-lining of short sections of pipe | F. Thomas Driver | 1991-09-03 |
| 5018545 | Apparatus for cleaning interior of a lateral pipeline | — | 1991-05-28 |