Drilldown: Patents
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Patents > Office
:
DEG
or
FR
or
GB
or
SU
& Filing date:
1918
& Supplementary to patent:
1917 12 28
& IPCs
:
IPC B64C3/00
or
IPC B64C39/00
& Number of figures:
4-10 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 1 result in range #1 to #1.