PISTON-DRIVEN DRUG PUMP DEVICES
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United States of America Patent
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Issued Date -
Nov 10, 2011
app pub date -
Apr 20, 2011
filing date -
Apr 20, 2010
priority date (Note) -
Abandoned
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Abstract
In piston-pump drug-delivery devices, changes in friction between the piston and vial in which it moves may be reduced and/or compensated for by suitable surface coatings and/or feedback control.
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