Drilldown: Patents
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- Patents (17537)
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- Publications (24556)
- Techtypes (2373)
Patents > Year granted:
1880 - 1889
& Office
:
LU
or
NL
or
Other
& National tech categories:
USPC 244/3.27
& First filing
:
No
or
Other
& Number of diagram pages:
1-2 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Use the filters below to narrow your results.
Showing below up to 3 results in range #1 to #3.