Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5115520 | Apparatus and methods for sealing a leaking toilet tank valve | Peter Colebrook, Jamil A. Razzak, Robert H. Denkmann | 1992-05-26 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5115520 | Apparatus and methods for sealing a leaking toilet tank valve | Peter Colebrook, Jamil A. Razzak, Robert H. Denkmann | 1992-05-26 |