Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4332516 | Method and apparatus for throwing down concrete | Tadasuke Ohtomo, Masahiro Yurugi, Takumi Naitoh, Kenichi Kaiho | 1982-06-01 |
| 4321223 | Process for placing concrete through high head | — | 1982-03-23 |