Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8216453 | Grate cover apparatus | Thomas H. Happel | 2012-07-10 |
| 8051568 | Grate cover apparatus and method | Thomas H. Happel | 2011-11-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8216453 | Grate cover apparatus | Thomas H. Happel | 2012-07-10 |
| 8051568 | Grate cover apparatus and method | Thomas H. Happel | 2011-11-08 |