Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6533243 | Self-closing valve | Wallace Maurice Sumner | 2003-03-18 |
| 6253785 | Automatic leak shutoff device | Wallace Maurice Sumner | 2001-07-03 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6533243 | Self-closing valve | Wallace Maurice Sumner | 2003-03-18 |
| 6253785 | Automatic leak shutoff device | Wallace Maurice Sumner | 2001-07-03 |