Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6935364 | Magnetically-operated relief valves | Antulio Tarazona, Ian Currington | 2005-08-30 |
| 6536676 | Valves | — | 2003-03-25 |
| 5863317 | Apparatus for gas liquid separation | Alex George Hunter | 1999-01-26 |
| 4311417 | Mine roof support | Lewis R. B. Bower, Arthur Scarfe | 1982-01-19 |
| 4268193 | Mine roof supports | — | 1981-05-19 |
| 4226558 | Control system | Lewis R. B. Bower, Philip W. Dudley | 1980-10-07 |