Drilldown: Patents
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- Airplane (18)
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- Letters (683)
- Organizations (967)
- Patents (17619)
- Person (2162)
- Publications (24571)
- Techtypes (2388)
Patents > Year granted:
1888
& Office
:
DK
or
GR
or
HU
or
US
& National tech categories
:
BE K
or
USPC 244/80
& CPCs
:
CPC B64C23/005
or
CPC B64C39/005
& First filing
:
No
or
Yes ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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