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Patent drawing - Autogyro flettner patent - . Public domain image

Patent drawing - Autogyro flettner patent - . Public domain image

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Summary

Image from Anton Flettner's autogyro patent

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patents
patent drawings
us patent office
autogyros in art
aviation patent drawings
drawings of autogyros
flettner autogyros
flettner helicopters
inventions
date_range

Date

14/11/2011
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Source

USPTO
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Link

http://uspto.gov/
copyright

Copyright info

public domain

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patents
patents
patent drawings
patent drawings
us patent office
us patent office
autogyros in art
autogyros in art
aviation patent drawings
aviation patent drawings
drawings of autogyros
drawings of autogyros
flettner autogyros
flettner autogyros
flettner helicopters
flettner helicopters
inventions
inventions