Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5352185 | Ankle exercising apparatus | Ernst Knoll | 1994-10-04 |
| 4669451 | Apparatus for postoperative and other exercising of elbow and shoulder joints | Ernst Knoll | 1987-06-02 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5352185 | Ankle exercising apparatus | Ernst Knoll | 1994-10-04 |
| 4669451 | Apparatus for postoperative and other exercising of elbow and shoulder joints | Ernst Knoll | 1987-06-02 |