Drilldown: Patents
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- Publications (24569)
- Techtypes (2381)
Patents > Year filed:
1910
& Office
:
??
or
DE
or
FI
or
SU
or
US
& National tech categories
:
DE 77h.6
or
USPC 244/30
& IPCs:
None
& Number of text pages:
1-2
& Number of diagram pages:
1 ![](/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 4 results in range #1 to #4.