Drilldown: Patents
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Patents > Year filed:
1909
& Year granted:
1910 - 1919
& Office
:
AH
or
CA
or
GB
& Applicant type
:
Hermann Burkardt
or
INDIV
or
None
& CPCs:
CPC B64C3/385
& First filing:
Yes ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 8 results in range #1 to #8.