Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8136516 | Concrete block splitting and pitching apparatus | William H. Karau, Joerg Marx | 2012-03-20 |
| 7766002 | Concrete block splitting and pitching apparatus | William H. Karau, Joerg Marx | 2010-08-03 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8136516 | Concrete block splitting and pitching apparatus | William H. Karau, Joerg Marx | 2012-03-20 |
| 7766002 | Concrete block splitting and pitching apparatus | William H. Karau, Joerg Marx | 2010-08-03 |