Drilldown: Patents
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Patents > Year filed:
1910
& Office:
US
& Applicant type :
COMPANY or
Hermann Burkardt or
INDIV or
INIV
& Applicant is inventor:
Yes
& IPCs :
IPC B64C3/18 or
IPC B64C39/00
& CPCs :
CPC B64C2700/6274 or
CPC B64C39/08
& Number of diagram pages:
3-9
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