Drilldown: Patents
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- Airplane (18)
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- Letters (683)
- Organizations (964)
- Patents (17538)
- Person (2109)
- Publications (24559)
- Techtypes (2373)
Patents > Filing date:
1800 - 1899
& Supplementary to patent
:
Patent BE-1909-214032
or
Patent FR-1891-216860
or
None
& National tech categories
:
DE 77h.5
or
USPC 451/102
& CPCs:
CPC F42B10/30 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.