Drilldown: Patents
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Patents > Office
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??
or
BE
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CH
or
DE
& Supplementary to patent
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Patent DE-1895-98580
or
Patent FR-1912-455471
& National tech categories
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DE 77h.9
or
FR 5
or
USPC 244/30 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 2 results in range #1 to #2.