Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5908266 | Flow drain | — | 1999-06-01 |
| 5862581 | Method for making a joint for a corrugated pipe segment | James Shade | 1999-01-26 |
| 5707088 | Joint for coupling plastic corrugated pipes | James Shade | 1998-01-13 |