Drilldown: Patents
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Patents > Year filed:
1913
& Office
:
AT
or
CA
or
CL
& Applicant type
:
Hermann Burkardt
or
INDIV
or
Louis-Marie Le Dantec
& Family year:
1913
& Number of text pages:
1-2 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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