Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5163470 | Overfill preventing device in underground liquid storage tank | — | 1992-11-17 |
| 4572254 | Lock system preventing mixing of different kinds of oil at gasoline stand | — | 1986-02-25 |
| 4444419 | Structure for prevention of mixing of different kinds of oils for oil-feeding couplings | — | 1984-04-24 |
| 4418340 | Liquid level indicator in a cylindrical gasoline tank of the horizontal type | — | 1983-11-29 |