Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4636194 | Burr-hole flow control valve | Rudolf R. Schulte, Gary P. East, Alfons Heindl | 1987-01-13 |
| 4560375 | Flow control valve | Rudolf R. Schulte, Gary P. East, Alfons Heindl | 1985-12-24 |
| 4552553 | Flow control valve | Rudolf R. Schulte, Gary P. East, Alfons Heindl | 1985-11-12 |