Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE39611 | Filter with stiffening ribs | Steven Zettel | 2007-05-08 |
| 6277166 | Filter with stiffening ribs | Steven Zettel | 2001-08-21 |
| 4641861 | Flexible joint for pipes | — | 1987-02-10 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE39611 | Filter with stiffening ribs | Steven Zettel | 2007-05-08 |
| 6277166 | Filter with stiffening ribs | Steven Zettel | 2001-08-21 |
| 4641861 | Flexible joint for pipes | — | 1987-02-10 |