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<a accesskey="3" href="page.php?w=Vacuum_pump&amp;p=2">3.Next</a>
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<p>A <b>vacuum pump</b> is a type of <a href="page.php?w=pump">pump</a> device that draws <a href="page.php?w=gas">gas</a> <a href="page.php?w=particle">particle</a>s from a sealed <a href="page.php?w=volume">volume</a> in order to leave behind a partial <a href="page.php?w=vacuum">vacuum</a>. The first vacuum pump was invented in 1650 by <a href="page.php?w=Otto_von_Guericke">Otto von Guericke</a>, and was preceded by the suction pump, which dates to antiquity.</p>

<p><big> History </big></p>
<p><big>Early pumps</big></p>
<p>The predecessor to the vacuum pump was</p><p>
<a accesskey="3" href="page.php?w=Vacuum_pump&amp;p=2">3.Next</a>
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