Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5779465 | Spark ignited burner | John B. Clarke | 1998-07-14 |
| 5447293 | Method and apparatus for quenching heat treated objects | John B. Clarke, Hans E. Mobius | 1995-09-05 |
| 5000159 | Spark ignited burner | John B. Clarke | 1991-03-19 |
| 4524752 | Recuperator | — | 1985-06-25 |
| 4496314 | Recuperator | — | 1985-01-29 |
| 4281824 | Heat treating apparatus | Wilfred G. Shedd | 1981-08-04 |