Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6406025 | Gasket and method for fabrication and use with corrugated pipe | James A. Westhoff, William C. Andrick | 2002-06-18 |
| 6371436 | Placement ring assembly having magnetic securing means | James A. Westhoff | 2002-04-16 |