Frank Polifka und Windhexe Person-Info 

( Ich bin Frank Polifka)
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Tornado in a Can - Slashdottech.slashdot.org › story › tornado-in-a-can

tech.slashdot.org
· Frank Polifka has a patent on his Windhexe device that creates a tornado force wind. Besides pulverizing concrete, it can pulverize small ...
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