Drilldown: Patents
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Patents > Office
:
FR
or
GB
or
NL
or
NZ
& Grant date:
August 1912
& Supplementary to patent
:
Patent FR-1911-429224
or
Patent GB-1909-8531
& IPCs
:
IPC B64C11/00
or
IPC B64C3/00
or
IPC B64C3/38 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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