Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4962698 | Apparatus for refining oils or fats | Jacob Drijftholt | 1990-10-16 |
| 4957758 | Method for refining oils or fats | Jacob Drijftholt | 1990-09-18 |
| 4393270 | Controlling perceived sound source direction | — | 1983-07-12 |