Drilldown: Patents
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Patents > Office
:
CA
or
DE
& Grant date:
January 1912
& Supplementary to patent
:
Patent GB-1920-04-06 Vickers Limited
or
None
& Related to aircraft:
1
& IPCs
:
IPC B64C11/00
or
IPC B64C35/00
& Number of text pages:
3-70 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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