Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4538949 | Conveyor for conveying silage or the like material | Fredericus Liet | 1985-09-03 |
| 4188759 | Sheet for constructing the wall of a substantially cylindrical silo; as well as substantially cylindrical silo | Fredericus Liet | 1980-02-19 |