Drilldown: Patents
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Patents > Applicant type
:
INDIV
or
agent
or
А. Нейфельд
& Publication date:
1905
& National tech categories
:
FR 6.4
or
USPC 244/153R
& IPCs
:
IPC B64B1/00
or
IPC B64C13/00
or
IPC B64C31/06
or
IPC B64C39/00 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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