Drilldown: Patents
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Patents > Office
:
CH
or
IN
or
MX
or
Other
or
None
& Inventor country
:
FR
or
HU
& Grant date:
1919
& IPCs
:
IPC B64C3/00
or
IPC B64C33/02
& Number of diagram pages:
1-2 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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