Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883134 | Milling machine for cutting trenches | Karl Bollinger | 1989-11-28 |
| 4824176 | Milling engine for excavating trenches in the ground | — | 1989-04-25 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883134 | Milling machine for cutting trenches | Karl Bollinger | 1989-11-28 |
| 4824176 | Milling engine for excavating trenches in the ground | — | 1989-04-25 |