Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7186094 | Method and apparatus for measuring work performed by a compressor | Ralph Edmund Harris, Kurt Franke | 2007-03-06 |
| 6981838 | Method and apparatus for detecting the occurrence of surge in a centrifugal compressor | Robert J. McKee | 2006-01-03 |
| 4654813 | Electronic square root error indicator | Cecil R. Sparks | 1987-03-31 |
| 4559610 | Gas pumping system analog | Cecil R. Sparks, Morton E. Brown | 1985-12-17 |
| 4424571 | Reciprocating compressor analog | — | 1984-01-03 |
| 4417164 | Mechanical valve analog | — | 1983-11-22 |
| 4404646 | Piping network analog apparatus | Cecil R. Sparks | 1983-09-13 |