VACUUM PUMP
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United States of America Patent
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N/A
Issued Date -
Feb 23, 2012
app pub date -
Mar 31, 2010
filing date -
Apr 29, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A multi stage vacuum pump for pumping corrosive fluid with a first flow section of material less resistant to corrosion than the material of a second flow section downstream of the first flow section.
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