Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5682921 | Undulating transverse interface for curved flapper seal | Michael S. Rawson, Mark S. Megill, Clifford H. Beall | 1997-11-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5682921 | Undulating transverse interface for curved flapper seal | Michael S. Rawson, Mark S. Megill, Clifford H. Beall | 1997-11-04 |