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Last edited on Wed Mar 11th, 2020 08:50 am by Mike Kearns
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| Posted: Wed Mar 11th, 2020 08:00 am |
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Mike Kearns
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1915 - A German-American civil engineer/aviation designer, Frederick Herman Leinweber has grand aspirations in aircraft design, particularly propellers... Last edited on Wed Mar 11th, 2020 08:50 am by Mike Kearns |
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