Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5624206 | Apparatus and method for supporting pipe main repair tools in an excavation | John H. Cohen, Curtis E. Leitko, Jr., Gerard T. Pittard, Terry P. Clifton | 1997-04-29 |
| 5462077 | Apparatus and method for shutting off fluid flow in a pipe main | John H. Cohen, Curtis E. Leitko, Jr., Gerard T. Pittard, Terry P. Clifton | 1995-10-31 |
| 5306101 | Cutting/expanding tool | Joseph J. Marazzo | 1994-04-26 |
| 5171106 | Cutting/expanding tool | Joseph J. Marazzo | 1992-12-15 |
| 5098225 | Cutting/expanding tool | Joseph J. Marazzo | 1992-03-24 |
| 4881567 | Liquid removal system | — | 1989-11-21 |
| 4869281 | Service line access system | Ronald P. Brigando | 1989-09-26 |