Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6981332 | Internal weld profile gauge | — | 2006-01-03 |
| 6739204 | Velocity measuring apparatus to establish purge gas velocity prior to welding | — | 2004-05-25 |
| 6637121 | Internal weld profile gauge | — | 2003-10-28 |
| 6550340 | Attachment for sampling purge gas | — | 2003-04-22 |
| 6073481 | Attachment for sampling purge gas pressure at weld site | — | 2000-06-13 |
| 6039240 | Welding backpressure control apparatus | — | 2000-03-21 |
| 5864111 | Method and device for controlling pipe welding | — | 1999-01-26 |