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| Number | Title | Issue Date |
| 5203684 | Oscillating piston pump or similar machine The compressor or similar machine has a first housing component which cooperates with two end members to form a first hollow space as well as a second housing component which cooperates with two end members to form a second hollow space. In addition, a on... | 04/20/1993 |
| 5201644 | Valve arrangement for pump or compressor An arrangement for a compressor with oscillating piston wings has a series of mutually angularly displaced discharge slots arranged in a radially extending end wall between a working chamber of the machine and an oppositely disposed discharge chamber. The... | 04/13/1993 |
| 4080114 | Oscillating positive displacement machine A novel motion translation mechanism is provided for translating rotary motion to reciprocal motion or reciprocal motion to rotary motion. The mechanism is adapted for use in a positive displacement machine for pumping and compressing fluids. A shaft is j... | 03/21/1978 |