Drilldown: Patents
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Patents > Year filed:
1880 - 1889
& Office
:
AT
or
MX
& National tech categories:
USPC 244/3.23
& First filing:
Yes
& Cites these patents:
None
& Number of diagram pages:
1-2 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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