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Patents > Tech fields: helicopter & Family year: 1900 - 1909

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Office:
Inventors:
Maurice Léger (6) · Charles Wolf (5) · Thomas Augustus Dring (4) · Henri de Lostalot (3) · Émile Dupont (3) · Samuel Dimmick Mott (3) · Edwin Richard Mumford (3) · Wilhelm Kress (3) · Désiré Sival (3) · Jean Desbois (3) · Joseph Chantraine (3) · Pierre-Pie Cazaux (2) · Christian Lorenzen (2) · George Alphonzo Metcalf (2) · Vassily Rebikov (2) · Jean-Jacques-Élie Farcot (2) · Gustav Mees (2)
Inventor country:
Applicant person:
None (10) · Maurice Léger (5) · Charles Wolf (5) · Thomas Augustus Dring (4) · Henri de Lostalot (3) · Joseph Chantraine (3) · Émile Dupont (3) · Désiré Sival (3) · Samuel Dimmick Mott (3) · Edwin Richard Mumford (3) · Jean Desbois (3) · Wilhelm Kress (3) · Pierre-Pie Cazaux (2) · Gustav Mees (2) · George Alphonzo Metcalf (2) · Vassily Rebikov (2)
Applicant is inventor:
Tech fields: (Click arrow to add another value)
Full specification filed date:
Application number:
None (33)
Granted:
Related to aircraft:
Patent agent:
None (47) · None (7) · G. de Mestral et F. Harlé (5) · J. Germain (5) · Munn & Co. (4) · Armengaud jeune (3) · Allison Bros. (2) · Edmund Hunt & Co. (2) · Dyrenforth, Lee, Chritton, and Wiles (2) · Phillipss (2) · Herbert Haddan & Co. (2)
National tech categories:
FR 6.4 (36) · None (18) · USPC 244/6 (10) · HU V/h (8) · USPC 244/65 (6) · USPC 244/17.21 (5) · USPC 244/17.19 (4) · DE 77h.6 (3) · DE 77h.5 (3) · RU Group V (3) · USPC 244/20 (3)
CPCs:
None (31) · CPC B64C23/005 (25) · CPC B64C2700/6281 (16) · CPC B64C27/04 (12) · CPC B64C2700/6274 (11) · CPC B64C27/82 (10) · CPC B64C27/12 (7) · CPC B64C39/005 (5) · CPC B64B1/00 (4) · CPC B64C27/006 (3) · CPC B64C27/52 (3) · CPC B64C29/0033 (2) · CPC B64C2700/6212 (2) · CPC B64C17/00 (2) · CPC B64C39/00 (2)
First filing:
Cites these patents:
Citations from after 1930:
Number of diagram pages:

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