Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4974422 | Evaporative condenser with fogging nozzle | — | 1990-12-04 |
| 4945941 | Means to reduce vibration in check valves and stop/check valves caused by pulsating low fluid flow | — | 1990-08-07 |
| 4865073 | Liquid level control for refrigeration system | — | 1989-09-12 |
| 4801125 | Valve body comprising sheet metal hemispheres and method for making same | — | 1989-01-31 |
| 4704069 | Method for operating dual slide valve rotary gas compressor | Paul G. Szymaszek | 1987-11-03 |
| 4611503 | Means for removing bearing from crankshaft | — | 1986-09-16 |
| 4610612 | Rotary screw gas compressor having dual slide valves | — | 1986-09-09 |
| 4567815 | Connecting rod and bearing assembly therefor | — | 1986-02-04 |
| 4551982 | Ice-thickness sensing device in refrigeration system | John K. Kopp | 1985-11-12 |
| 4516994 | Apparatus for separating liquid droplets from gas | — | 1985-05-14 |
| 4512550 | Sealing means for valve spindle | — | 1985-04-23 |
| 4507064 | Rotary gas compressor having rolling pistons | Paul G. Szymaszek, John G. Nikolaus | 1985-03-26 |
| 4497181 | Means to measure, indicate and regulate thickness of ice layer in refrigeration system | John K. Kopp | 1985-02-05 |
| 4450856 | Means for releasably securing hand-wheel to valve spindle | — | 1984-05-29 |