Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8900925 | Method for manufacturing a diode, and a diode | Richard Spitz, Alfred Goerlach | 2014-12-02 |
| 6589306 | Centrifugal separator apparatus for removing particulate material from an air stream | Richard L. Ronning | 2003-07-08 |
| 6584699 | Three stage single pass high density drying apparatus for particulate materials | Richard L. Ronning | 2003-07-01 |
| 4200086 | Wood burning stove and fireplace | — | 1980-04-29 |