Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6135748 | Apparatus for manufacturing a replacement pipe liner in reduced form | — | 2000-10-24 |
| 6089275 | Replacement pipe for installation in an existing conduit | — | 2000-07-18 |
| 5589131 | Method for manufacturing a replacement pipe for installation in an existing conduit | — | 1996-12-31 |
| 5587126 | Method of manufacturing a pipe liner for installation in an existing conduit | — | 1996-12-24 |
| 5447665 | Method of removal of replacement pipe installed in an existing conduit | — | 1995-09-05 |
| 5397513 | Method for installing a length of substantially rigid thermoplastic pipe in an existing conduit | — | 1995-03-14 |
| 5368809 | Method of installing a new pipe inside an existing conduit by progressive rounding | — | 1994-11-29 |
| 5244624 | Method of installing a new pipe inside an existing conduit by progressive rounding | — | 1993-09-14 |
| 5034180 | Method for installing a substantially rigid thermoplastic pipe in an existing pipeline | — | 1991-07-23 |
| 4867921 | Process for installing a new pipe inside an existing pipeline | — | 1989-09-19 |
| 4429720 | Apparatus for seeking out and repairing leaks in pipes | Richard Beck | 1984-02-07 |