Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6158718 | Gate valve | Heinrich Lang | 2000-12-12 |
| 5951066 | Connecting system for wellhead components | Heinrich Lang | 1999-09-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6158718 | Gate valve | Heinrich Lang | 2000-12-12 |
| 5951066 | Connecting system for wellhead components | Heinrich Lang | 1999-09-14 |