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Patents > Year granted: 1900 - 1909 & Tech fields: helicopter

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Office:
Inventors:
Maurice Léger (9) · Émile Dupont (3) · Joseph Chantraine (3) · Jean Desbois (3) · Henri de Lostalot (3) · Emanuel Kalisch (2) · George Alphonzo Metcalf (2) · Désiré Sival (2) · Edwin Richard Mumford (2) · Vassily Rebikov (2) · Charles Launcelot Garland (2) · Joseph Maes (2)
Inventor country:
Applicant person:
None (11) · Maurice Léger (6) · Émile Dupont (3) · Jean Desbois (3) · Henri de Lostalot (3) · Joseph Chantraine (3) · Edwin Richard Mumford (2) · George Alphonzo Metcalf (2) · Désiré Sival (2) · Joseph Maes (2) · Emanuel Kalisch (2) · Vassily Rebikov (2)
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Full specification filed date:
Application number:
None (33)
Granted:
Related to aircraft:
National tech categories:
None (21) · FR 6.4 (21) · USPC 244/6 (5) · HU V/h (4) · USPC 244/68 (2) · USPC 244/65 (2) · AT 77d (2) · USPC 244/17.21 (2) · USPC 244/17.19 (2) · IT 8 (2) · DE 77h.6 (2) · BE K (2) · DE 77h (2)
First filing:
Cites these patents:
Citations from after 1930:
Number of diagram pages:

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