Drilldown: Patents
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Patents > Office
:
DE
or
ES
or
FR
or
UN
or
US
& Application number:
None
& Granted:
Yes
& Publication date:
1908
& National tech categories:
DE 77h.6
& IPCs:
IPC B64C27/54 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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