Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4986302 | Valve of direct passage type which is responsive to fluid pressure | — | 1991-01-22 |
| 4836247 | Regulator means for automatically shutting the gas pipeline passage off during pressure reducing failure | — | 1989-06-06 |
| 4787416 | Regulator means for automatically shutting pipeline passage off during pressure reducing failure | — | 1988-11-29 |
| 4638835 | Automatic overflow control apparatus for the pipeline passage | — | 1987-01-27 |