Revision history of "Patent DE-1915-303909"

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  • curprev 12:55, 23 April 2022‎ LTA talk contribs‎ 1,040 bytes +1,040‎ Created page with "Aerial reconnaissance gondola with its own steering surface (like a big rudder). === Sources === {{DEpatentsources|303909}} {{Patent |Year filed=1915 |Year granted=1922 |Off..."
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