Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5639287 | Filter system for filtering fluids | Peter van de Graaf | 1997-06-17 |
| 5501794 | Wave filter with flexible tensioning members | Peter van de Graaf | 1996-03-26 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5639287 | Filter system for filtering fluids | Peter van de Graaf | 1997-06-17 |
| 5501794 | Wave filter with flexible tensioning members | Peter van de Graaf | 1996-03-26 |