Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6401759 | Liner bag for manhole and method of lining a manhole | Takao Kamiyama, Yasuhiro Yokoshima, Shigeru Endoh | 2002-06-11 |
| D452835 | Off-road four wheel vehicle | Takatsugu Kido | 2002-01-08 |