Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4633868 | Closed circuit type respirator | Akira Itoh | 1987-01-06 |
| 4590933 | Static pressure automatic control device for closed circuit respirator | — | 1986-05-27 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4633868 | Closed circuit type respirator | Akira Itoh | 1987-01-06 |
| 4590933 | Static pressure automatic control device for closed circuit respirator | — | 1986-05-27 |