Drilldown: Patents
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Patents > Office:
FR
& Inventor country
:
HU
or
US
or
VN
& Filing date:
December 27, 1917
& Application number:
490512D
& IPCs
:
IPC B64C13/00
or
IPC B64C3/00
or
IPC B64C39/00
& Number of text pages:
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