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Notice: Trying to access array offset on value of type int in /home/econterm/econterms.net/aero/extensions/Cargo/drilldown/CargoFilterValue.php on line 79 Drilldown: Patents - Inventing aviation
Patents > Tech fields:
propellers& Filing date:
1900 - 1999& Supplementary to patent :
Patent BE-1907-199348orPatent DE-1895-98580orPatent FR-1908-392672orNone& Related to aircraft:
Yes& National tech categories:
FR 6.2& Family year:
1910& Cites these patents:
None& Citations from after 1930:
None