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File:Goddarddec151916pg1x.jpg
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Soubor:Goddarddec151916pg1x.jpg
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Goddarddec151916pg1x
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English: December 15, 1916 - Goddard Rocket Apparatus Patent Date 4 June 2012 Source smithsonain archives http://siarchives
Soubor:Robert Hutchings Goddard signature.png
Goddard's signature from a copy of his 1916 Rocket Apparatus Patent. Date 15 December 1916 Source File:
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Author creator QS:P170,Q182546
Soubor:Goddard papers - goddarddec151916.djvu
Date 15 December 1916 Source File:
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& File:Goddarddec151916pg3x.
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Author creator QS:P170,Q182546