Drilldown: Patents
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- Airplane (18)
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- Letters (683)
- Organizations (964)
- Patents (17580)
- Person (2122)
- Publications (24567)
- Techtypes (2376)
Patents > Year granted:
1860 - 1869
& National tech categories
:
HU V/h
or
USPC 244/6
& Cites these patents
:
USPC 244/87
or
None
& Citations from after 1930:
None ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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