Drilldown: Patents
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Patents > Applicant firm:
None
& Applicant type
:
Hermann Burkardt
or
INDIV
& Grant date:
1900
& Supplementary to patent
:
Patent FR-1908-392672
or
Patent GB-1908-4519
or
None
& National tech categories:
USPC 244/32
& CPCs
:
CPC B64B1/40
or
CPC B64C2700/6212 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 1 result in range #1 to #1.