Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4889091 | Rotary valve for natural gas rotary engine | John Abraham | 1989-12-26 | $6,945,000 |
| 4788507 | Peak timeout indicator/encoder and method | David J. Mazurek | 1988-11-29 | $7,749,000 |
| 4386890 | Delivery valve assembly, especially for rotary compressors | — | 1983-06-07 | $1,376,000 |