Drilldown: Patents
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- Airplane (18)
- Airship (15)
- Companies (480)
- Event (141)
- Letters (683)
- Organizations (965)
- Patents (17611)
- Person (2128)
- Publications (24568)
- Techtypes (2379)
Patents > Year granted:
1914
& National tech categories
:
DE 77h
or
USPC 244/80
& CPCs
:
CPC B64B1/58
or
CPC B64C17/00
or
CPC B64C3/385
& Number of claims:
8-20
& Number of figures:
2-4 ![](/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 1 result in range #1 to #1.