Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6604442 | Twin-head beveling machine for high-precision machining on heads of large-and medium-diameter pipes | — | 2003-08-12 |
| 5601383 | Excavation method and apparatus for accessing underground pipes of pipelines for gas, oil, and the like for maintenance and/or restoration | — | 1997-02-11 |