Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5609439 | Method of and apparatus for repairing and sealing junctions between mains and branch pipes | Herbert Schreiner | 1997-03-11 |
| 5388616 | Invertible liner for internal surfaces of fluid conveying pipes and the like | Hans Muller | 1995-02-14 |
| 5280811 | Method of softlining sewer rehabilitation | Guilio Catallo | 1994-01-25 |
| 5029615 | Method for lining a pipe laid in the ground | Hans Muller | 1991-07-09 |
| 4770562 | Method of salvaging a pipe conduit buried under ground | Hans Muller | 1988-09-13 |
| 4714095 | Method of salvaging a pipe conduit buried under ground | Hans Muller | 1987-12-22 |