Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5954095 | Apparatus and method for sealing a damaged pipe | Stephen Cecil Grigory, Jesse Abergo Villarreal, Donald W. Johnson | 1999-09-21 |
| 5920976 | Apparatus and method for remotely sealing a damaged pipe | Stephen Cecil Grigory, Jesse Abergo Villarreal, Donald W. Johnson | 1999-07-13 |