Drilldown: Patents
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Patents > Applicant type :
Hermann Burkardt or
INDIV or
INDIV + COMPANY
& Filing date:
1911
& National tech categories :
BE K or
None
& IPCs :
IPC B64C27/04 or
IPC B64C3/38
& Number of figures:
4
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Showing below up to 3 results in range #1 to #3.