Drilldown: Patents
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Patents > Applicant type
:
1
or
Hermann Burkardt
or
INDIV
& Filing date:
December 1917
& Granted:
Yes
& Supplementary to patent
:
Patent GB-1911-29012
or
Patent NO-1915-12-15 Carl Alfred Johansson
or
None
& National tech categories:
None
& IPCs:
IPC B64C39/00 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 2 results in range #1 to #2.