Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5104298 | Diaphragm-type air pump with an efficient core | Keizo Takahashi | 1992-04-14 |
| 5013223 | Diaphragm-type air pump | Keizo Takahashi | 1991-05-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5104298 | Diaphragm-type air pump with an efficient core | Keizo Takahashi | 1992-04-14 |
| 5013223 | Diaphragm-type air pump | Keizo Takahashi | 1991-05-07 |