Drilldown: Patents
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Patents > Office
:
CL
or
DE
or
GR
or
HU
& Filing date:
January 17, 1917
& National tech categories:
DE 77h.2
& IPCs
:
IPC B64C3/44
or
IPC B64C33/00
or
IPC B64C39/00
& Number of diagram pages:
None ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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