Drilldown: Patents
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- Airplane (18)
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- Letters (683)
- Organizations (966)
- Patents (17613)
- Person (2134)
- Publications (24568)
- Techtypes (2381)
Patents > Year filed:
1860 - 1869
& Office
:
GB
or
IN
or
NL
& Inventor country
:
RO
or
None
& National tech categories
:
USPC 244/153R
or
USPC 244/30
or
None
& Cites these patents
:
1912
or
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Use the filters below to narrow your results.
Showing below up to 7 results in range #1 to #7.