Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4699355 | Fail-safe fluid piloted valve positioner with hydromechanical position lock | Jerry B. Tomlin | 1987-10-13 |
| 4574843 | Solenoid valve override cartridge | Curtis H. Day | 1986-03-11 |
| 4554940 | Pressure reducing and regulating valve | — | 1985-11-26 |
| 4475568 | Pressure reducing and regulating valve | — | 1984-10-09 |
| D273699 | Solenoid operated valve | Curtis H. Day, George L. Schick | 1984-05-01 |
| 4444216 | Pressure reducing and regulating valve | — | 1984-04-24 |
| 4418720 | Solenoid operated directional valves having modular construction | Curtis H. Day | 1983-12-06 |
| 4406307 | Directional valve with spool transfer loop | Curtis H. Day, Rainer Teichert | 1983-09-27 |
| 4375226 | Valve body for solenoid operated directional valve | — | 1983-03-01 |
| 4353394 | Solenoid operated directional valve with detent mechanism | — | 1982-10-12 |
| 4308891 | Terminal blocks and indicator for solenoid valves | — | 1982-01-05 |
| 4194173 | Solenoid construction | Arthur W. Gill | 1980-03-18 |
| 4185661 | Solenoid operated directional valve with detent mechanism | Arthur W. Gill, Curtis H. Day | 1980-01-29 |