Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5428907 | Downcomer and flapper valve | John L. Haslbeck, Scott M. Harkins | 1995-07-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5428907 | Downcomer and flapper valve | John L. Haslbeck, Scott M. Harkins | 1995-07-04 |