Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848520 | Telescopic mast assembly | Henry J. Spies, Woldemar R. Petri | 1989-07-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848520 | Telescopic mast assembly | Henry J. Spies, Woldemar R. Petri | 1989-07-18 |