Drilldown: Patents
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Patents > Filing date:
November 1902
& Application number
:
326476D
or
344263D
or
flapping
or
hybrid
or
wheels
& National tech categories:
FR 6.3
& IPCs
:
IPC B64C3/54
or
IPC B64C39/00
& Number of text pages:
4 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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