Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7201533 | Sewer grate locking mechanism and method of installing same | — | 2007-04-10 |
| 5957172 | Automated mobile sandbag unit | Roger DeGreef | 1999-09-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7201533 | Sewer grate locking mechanism and method of installing same | — | 2007-04-10 |
| 5957172 | Automated mobile sandbag unit | Roger DeGreef | 1999-09-28 |