Drilldown: Patents
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Patents > Year filed:
1914
& Office :
?? or
BE or
IN
& Related to aircraft :
No or
flapping
& National tech categories :
BE K or
USPC 244/80 or
USPC 244/90R
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.