Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5860606 | Chipper/shredder having rotatable feed chute | David A. Tiedeman | 1999-01-19 |
| D372922 | Chute guard for a combined chipper and shredder | David A. Tiedeman | 1996-08-20 |
| D358399 | Chipper/shredder | David A. Tiedeman | 1995-05-16 |