Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4662607 | Apparatus for operating manhole cover | Susumu Mochizuki | 1987-05-05 |
| 4653728 | Apparatus for operating and transferring manhole cover | Susumu Mochizuki | 1987-03-31 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4662607 | Apparatus for operating manhole cover | Susumu Mochizuki | 1987-05-05 |
| 4653728 | Apparatus for operating and transferring manhole cover | Susumu Mochizuki | 1987-03-31 |