Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5694708 | Excavating and conveying chain assembly with two-part scraper fingers | Josef Theurer | 1997-12-09 |
| 5664633 | Machine for treating a ballast bed | Josef Theurer | 1997-09-09 |
| 5611403 | Machine for sucking up rail ballast | Josef Theurer, Friedrich Oellerer | 1997-03-18 |
| 5590601 | Track working machine | Josef Theurer | 1997-01-07 |