Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4199279 | Method and apparatus for placing concrete under water | Tadahiko Okumura, Yasuo Kajioka | 1980-04-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4199279 | Method and apparatus for placing concrete under water | Tadahiko Okumura, Yasuo Kajioka | 1980-04-22 |