Suction device
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United States of America Patent
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Nov 27, 2012
Grant Date -
Jul 14, 2011
app pub date -
Nov 12, 2010
filing date -
Jul 5, 2004
priority date (Note) -
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Abstract
This invention relates to plunger operated liquid dispensers, such as hand held pipettors, which are used to portion liquids. Specifically the invention relates to a reliable removal of a liquid from the liquid dispenser. According to the invention the plunger of the liquid dispenser is arranged into a speeded up movement while removing the liquid. This change in speed is preferably sudden.
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