Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5197540 | Boring device for lining material in branched portions of lined conduit | Isaburo Yagi, Hideo Maruyama, Masaru Yamakawa | 1993-03-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5197540 | Boring device for lining material in branched portions of lined conduit | Isaburo Yagi, Hideo Maruyama, Masaru Yamakawa | 1993-03-30 |