Drilldown: Patents
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Patents > Office
:
CL
or
ES
or
GB
or
GR
or
RU
or
SAX
& Grant date:
September 12, 1912
& Supplementary to patent:
Patent FR-1911-429224
& IPCs
:
IPC B64C3/00
or
IPC B64C31/06 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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