Drilldown: Patents
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Patents > Applicant type :
INIV or
None
& Grant date:
1840 - 1849
& Supplementary to patent:
None
& Related to aircraft :
1/2 or
1912-01-30 or
No or
`1 or
flapping
Use the filters below to narrow your results.
Showing below up to 5 results in range #1 to #5.