Drilldown: Patents
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Patents > Office:
DE
& Applicant type
:
COMPANY
or
Louis-Marie Le Dantec
or
А. Нейфельд
& Related to aircraft
:
1
or
1852-08-14
or
1?
& National tech categories:
DE 42c.35
& Family year:
1915
& Number of text pages:
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