Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6267877 | Separation of a waste phase from a water based emulsion | — | 2001-07-31 |
| 4909716 | Screw step drive internal volume ratio varying system for helical screw rotary compressor | Joseph S. Orosz, Donald D. Schaefer | 1990-03-20 |