Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8763599 | Masonry block multi-splitting apparatus and method | William H. Karau | 2014-07-01 |
| 8136516 | Concrete block splitting and pitching apparatus | William H. Karau, Tommy W. Davis | 2012-03-20 |
| 8028688 | Concrete block splitting and pitching apparatus and method | William H. Karau | 2011-10-04 |
| 7766002 | Concrete block splitting and pitching apparatus | William H. Karau, Tommy W. Davis | 2010-08-03 |