Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4594081 | Gas scrubber | Paul E. Christian | 1986-06-10 |
| 4385621 | Oil stove for burning waste oil and normal heating oil | — | 1983-05-31 |
| 4351316 | Combustion apparatus for burning waste oils | — | 1982-09-28 |
| 4308854 | Oil stove for burning waste oil and normal heating oil | — | 1982-01-05 |
| 4269584 | Hot pelletizer for extruders | Gunther Stefan | 1981-05-26 |