Drilldown: Patents
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Patents > Office
:
GB
or
NL
& Grant date:
1919
& Granted:
Yes
& National tech categories:
None
& IPCs
:
IPC B64C1/00
or
IPC B64C3/18
& Cites these patents:
None
& Number of text pages:
1-2 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 10 results in range #1 to #10.