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Patent drawing - Darrieus rotor patent drawing - Public domain portrait drawing Public domain image

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Summary

Drawing of the Darrieus rotor from US Patent 1835018Deutsch: Skizze des Darrieus-Rotors as dem US Patent 1835018

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patents patent drawings us patent office darrieus wind generators inventions
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Date

07/09/2012
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Source

USPTO
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Link

http://uspto.gov/
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Copyright info

public domain

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