Drilldown: Patents
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- Airplane (18)
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- Companies (480)
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- Letters (683)
- Organizations (967)
- Patents (17619)
- Person (2162)
- Publications (24571)
- Techtypes (2388)
Patents > Year granted:
1850 - 1859
& Office
:
DEG
or
LU
or
US
& Related to aircraft
:
0.5
or
1/2
or
navigation
or
rudder
& National tech categories:
USPC 244/3.23 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Use the filters below to narrow your results.
Showing below up to 7 results in range #1 to #7.