Inventor
BETTS PETE A
US4 patents
Patents
4 patentsUS5616171AApr 1, 1997
Pulse jet filter cleaning system
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US6009898AJan 4, 2000
Valve assembly for preventing liquid ingestion and methods
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US6213146B1Apr 10, 2001
Valve assembly for preventing liquid ingestion and methods
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US6209559B1Apr 3, 2001
Valve assembly for preventing liquid ingestion and methods
DONALDSON CO INC6 citations73