Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6766570 | Coupling units connecting tubular members having a hardened inner wall for carrying mechanically abrasive fluid concrete | Gary D. Lehnhardt | 2004-07-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6766570 | Coupling units connecting tubular members having a hardened inner wall for carrying mechanically abrasive fluid concrete | Gary D. Lehnhardt | 2004-07-27 |