Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8127949 | Crane backstay spreader | Robert J. Walker | 2012-03-06 |
| 5842587 | Offsetting link assembly for folding luffing jib | Michael J. Wanek, Robert J. Walker | 1998-12-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8127949 | Crane backstay spreader | Robert J. Walker | 2012-03-06 |
| 5842587 | Offsetting link assembly for folding luffing jib | Michael J. Wanek, Robert J. Walker | 1998-12-01 |