Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4320548 | Method of erecting a bridge girder | Hiroshi Tada, Wataru Abe, Keizo Ishikawa | 1982-03-23 |
| 4209868 | Fixed support structure | Hiroshi Tada | 1980-07-01 |
| 4188681 | Support structure | Hiroshi Tada | 1980-02-19 |