Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6312238 | Hydraulically retractable hydraulic motor | — | 2001-11-06 |
| 5702243 | Hydraulic motor with pressure compensated end plates | — | 1997-12-30 |
| 5471400 | Method for detecting and specifying compressor cylinder leaks | Anthony J. Smalley, Ralph Edmund Harris | 1995-11-28 |
| 5096394 | Positive displacement pump with rotating reciprocating piston and improved pulsation dampening | Edgar C. Schroeder | 1992-03-17 |
| 5074767 | Positive displacement pump with rotating reciprocating piston and improved lubrication feature | Edgar C. Schroeder | 1991-12-24 |
| 5022831 | Positive displacement pump with rotating reciprocating piston | Edgar C. Schroeder | 1991-06-11 |
| 4286929 | Dual pressure gas motor, and method of operation | Rodney T. Heath | 1981-09-01 |