Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6906277 | Reinforcement butt stud welding method and device therefor and repairing/expanding method for ferroconcrete structure | — | 2005-06-14 |
| 4944492 | Wedge-type jack apparatus for raising structure while sustaining very large pressure due to same and temporarily supporting the structure | — | 1990-07-31 |