Drilldown: Patents
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Patents > Year filed:
1900 - 1909
& Applicant type
:
INDIV
or
А. Нейфельд
& Supplementary to patent
:
Patent DE-1899-123884
or
None
& National tech categories
:
FR 6.3
or
USPC 244/153R
& IPCs
:
IPC B64C1/00
or
IPC B64C17/00
or
IPC B64C23/00
or
IPC B64C39/00 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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