Drilldown: Patents
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Patents > Office :
GB or
MX or
UN
& Applicant type :
INDIV or
А. Нейфельд
& Full specification filed date:
1919
& National tech categories :
GB 4 propelling or
None
& IPCs:
IPC B64C13/00
& First filing:
Yes
& Number of figures:
3
Use the filters below to narrow your results.
Showing below up to 2 results in range #1 to #2.