Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660373 | Extendable and retractable lifting apparatus | Dieter Hein, Leonhard Jaumann | 1997-08-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660373 | Extendable and retractable lifting apparatus | Dieter Hein, Leonhard Jaumann | 1997-08-26 |