Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846212 | Bleed valve assembly for double block and bleed system | Daniel P. Kusmer | 1989-07-11 |
| 4846225 | Transmission assembly for use with double block and bleed system | Daniel P. Kusmer | 1989-07-11 |
| 4846441 | Methods and apparatus for adjusting a valve closure member | Douglas G. Calvin | 1989-07-11 |
| 4828221 | Valve assembly | Paul A. Yohner | 1989-05-09 |
| 4817213 | Method for forming a torus and a piston made therefrom for use in a rotary actuator | — | 1989-04-04 |