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Old 11-16-2013, 03:47 PM   #1 (permalink)
aerohead
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Boat tail patent

here is a patent illustration for an extensible boat tail,advocated by Wolf H.Hucho,dating to the mid-1930s by Koenig-Fachsenfeld.What's old is new again
http://patentimages.storage.googleap...228-D00000.png

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