Drilldown: Patents
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- Publications (24571)
- Techtypes (2388)
Patents > Office
:
??
or
BE
or
DE
& Filing date:
1900 - 1909
& National tech categories
:
BE K
or
USPC 244/22
or
None
& IPCs
:
IPC B64C3/18
or
None
& CPCs:
CPC B64C2700/6281
& Number of figures:
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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Use the filters below to narrow your results.
Showing below up to 2 results in range #1 to #2.