Drilldown: Patents
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Patents > Year granted:
1880 - 1889
& Office:
US
& Inventor country
:
ES
or
RU
or
US
& CPCs:
CPC B64C11/04
& Number of text pages:
1-2 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 6 results in range #1 to #6.