Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10161547 | Device and method for forming pipe elements | Earl Haas, Douglas R. Dole | 2018-12-25 |
| 9038428 | Spin forming method | Earl Haas | 2015-05-26 |
| 9010164 | Methods for manufacture of pipe element having shoulder, groove and bead | Earl Haas, Douglas R. Dole | 2015-04-21 |