Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5484232 | Method for injecting lubricant and filler in the pipe-jacking method | Mitsutoshi Hayashi, Akitaka Fujita, Minoru Kurashina, Makoto Kajiyama, Hideki Uno | 1996-01-16 |