Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6807886 | Knife indexing apparatus | Mark Rasper | 2004-10-26 |
| 6293174 | Quick change drive for core cutters | — | 2001-09-25 |
| D362006 | Combined circular knife and guard | Edwin Gast, Barry Hammerberg | 1995-09-05 |