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| Number | Title | Issue Date |
| 5763973 | Composite barrier can for a magnetic coupling A composite barrier can and method of making same for use with industrial magnetic drive pumps. The barrier can is used to prevent leakage between the inner magnet assembly attached to the pump and the outer magnet assembly attached to the pump drive or m... | 06/09/1998 |
| 5601414 | Interstage liquid/gas phase detector A positive displacement rotary axial screw pump which comprises a series of sealed closures formed by meshing of the rotors for building the internal pressure gradient of the pump from the pump inlet to its outlet. A programmable logic circuit is provided... | 02/11/1997 |
