Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4823840 | Changeover valve | Yoshio Asou | 1989-04-25 |
| 4796924 | Coupling for multi-passage tube | Norio Ando, Hisao Sagara | 1989-01-10 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4823840 | Changeover valve | Yoshio Asou | 1989-04-25 |
| 4796924 | Coupling for multi-passage tube | Norio Ando, Hisao Sagara | 1989-01-10 |