Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4321306 | Rubber stopper for tight sealing | — | 1982-03-23 |
| 4316941 | Rubber stopper for sealing | Mituharu Morozumi | 1982-02-23 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4321306 | Rubber stopper for tight sealing | — | 1982-03-23 |
| 4316941 | Rubber stopper for sealing | Mituharu Morozumi | 1982-02-23 |