Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5388929 | Method of renovating and/or protecting sewers or pipes | — | 1995-02-14 |
| 5145281 | Method of renovating and/or protecting sewers or pipes | — | 1992-09-08 |
| 5102263 | Method of renovating and/or protecting sewers and pipes | Peter David Allen | 1992-04-07 |
| 4963211 | Method of and machine for winding tubes from strip | Peter David Allen | 1990-10-16 |
| 4893389 | Reinstatement of lateral branch connections in relined sewers or pipes | Peter David Allen | 1990-01-16 |