Progressing cavity pump with dual material stator

Progressing cavity pump with wobble stator and magnetic drive

Progressing cavity pumps with split extension tubes

Progressing cavity stator including at least one cast...

Progressing cavity stator including at least one cast...

Progressive cavity compressor having check valves on the...

Progressive cavity drive train

Progressive cavity drive train

Progressive cavity helical device

Progressive cavity motors using composite materials

Progressive cavity pump

Progressive cavity pump or motors

Progressive cavity pump with meltable stator

Progressive cavity pump with tamper-proof safety

Progressive cavity pump/motor

Progressive cavity pump/motor stator, and apparatus and...

Progressive cavity pumps using composite materials

Progressive cavity transducer

Progressive staged flow to precompress the pump internal...

Progressive-cavity pump with composite stator and...