Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4618298 | Method for constructing an enlarged tunnel and apparatus for forming the same | Shigeo Takamiya, Kazutoshi Inoue | 1986-10-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4618298 | Method for constructing an enlarged tunnel and apparatus for forming the same | Shigeo Takamiya, Kazutoshi Inoue | 1986-10-21 |