Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5244583 | Dewatering process | Ronald G. Renza, Robert J. Crosby, Erich W. Sodtalbers | 1993-09-14 |
| 4986911 | Dewatering process and apparatus | Ronald G. Renza, Robert J. Crosby, Erich W. Sodtalbers | 1991-01-22 |
| 4602998 | Raisable plow assembly | — | 1986-07-29 |
| 4302170 | Accumulator head having a piston with a self-wiping face | — | 1981-11-24 |
| 4297092 | Accumulator head used in the formation of a multi-layer parison | — | 1981-10-27 |