Drilldown: Patents
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Patents > Year filed:
1895
& Office
:
CA
or
CH
or
HU
or
LU
or
UN
& Filing date:
1890 - 1899
& CPCs
:
CPC B64C13/00
or
None
& Number of claims:
2-3 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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