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Patents > Tech fields: helicopter & Grant date: 1900 - 1909

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Office:
Inventors:
Maurice Léger (4) · Jean Desbois (3) · Désiré Sival (3) · Henri de Lostalot (3) · Joseph Chantraine (3) · Joseph Maes (2) · George Alphonzo Metcalf (2) · Émile Dupont (2) · Edwin Richard Mumford (2) · Emanuel Kalisch (2)
Inventor country:
Applicant person:
None (7) · Maurice Léger (4) · Désiré Sival (3) · Joseph Chantraine (3) · Henri de Lostalot (3) · Jean Desbois (3) · Joseph Maes (2) · George Alphonzo Metcalf (2) · Edwin Richard Mumford (2) · Emanuel Kalisch (2) · Émile Dupont (2)
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Full specification filed date:
Application number:
None (23)
Granted:
Related to aircraft:
National tech categories:
FR 6.4 (27) · None (15) · USPC 244/6 (5) · HU V/h (4) · USPC 244/17.19 (3) · USPC 244/17.21 (2) · USPC 244/65 (2) · USPC 416/120 (2) · USPC 244/68 (2)
First filing:
Cites these patents:
Citations from after 1930:
Number of diagram pages:

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