Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6499771 | Mechanical pipe coupling with toothed retainer | Ronald R. Snyder, Sr., Charles E. Wilk, Jr., Lawrence W. Thau, Jr. | 2002-12-31 |
| 6473981 | Diameter indicator for use with groove forming tools | — | 2002-11-05 |
| 6422535 | Knife gate valve | Jon Terence Stone, Torrey G. Sipos | 2002-07-23 |
| D454512 | Pipe tape measure with indicia pattern | — | 2002-03-19 |