Drilldown: Patents
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Patents > Grant date:
1890 - 1899
& Publication date:
1900 - 1999
& Citations from after 1930:
None
& Number of text pages:
3-50000000 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 3 results in range #1 to #3.