Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6499771 | Mechanical pipe coupling with toothed retainer | Ronald R. Snyder, Sr., Charles E. Wilk, Jr., Douglas R. Dole | 2002-12-31 |
| 6371491 | Pipe fitting gasket having enhanced surface properties | Charles W. Schultz | 2002-04-16 |