Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4664212 | Vacuum wall crawler | Hidenori Watanabe | 1987-05-12 |
| 4437202 | Automatic wall cleaning machine | — | 1984-03-20 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4664212 | Vacuum wall crawler | Hidenori Watanabe | 1987-05-12 |
| 4437202 | Automatic wall cleaning machine | — | 1984-03-20 |