Drilldown: Patents
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Patents > Applicant type :
INDIV or
А. Нейфельд
& Application number:
491389D
& Publication date:
1919
& National tech categories :
FR 6.4 or
USPC 244/153R
& IPCs :
IPC B64C13/00 or
IPC B64C31/06 or
IPC B64C39/00
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Showing below up to 1 result in range #1 to #1.