Drilldown: Patents
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- Patents (17619)
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- Publications (24571)
- Techtypes (2386)
Patents > Year granted:
1910 - 1919
& Office
:
AH
or
AT
or
DE
or
HU
& National tech categories:
DE 77h.4
& IPCs:
None ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 10 results in range #1 to #10.