Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4926957 | Device capable of suction-adhering to a wall surface and moving therealong | — | 1990-05-22 |
| 4860400 | Device capable of adhering to a wall surface by suction and treating it | — | 1989-08-29 |
| 4809383 | Device capable of adhering to a wall surface by suction and treating it | — | 1989-03-07 |
| 4719659 | Rotary travelling surface treatment device | — | 1988-01-19 |
| 4688289 | Device capable of adhering to a wall surface by suction and treating it | — | 1987-08-25 |
| 4563840 | Cleaning particle impinging device and air blast cleaning apparatus using said device | — | 1986-01-14 |