Drilldown: Patents
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Patents > Year filed:
1910 - 1919
& Inventor country:
DE
& Supplementary to patent:
None
& Related to aircraft :
0? or
1911-07-04 or
Yes
& National tech categories:
USPC 244/22
Use the filters below to narrow your results.
Showing below up to 2 results in range #1 to #2.