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Patents > Tech fields : Helicopter or hybrid & Number of claims: 6-15

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Office:
Inventors:
Francis Alexander Barton (3) · Alfred K. R. A. Krakow (3) · Maurice Léger (3) · Thomas Augustus Dring (3) · Edwin Richard Mumford (2) · Franz Xaver Wels (2) · Martin Jelalian (2) · Enrico Forlanini (2) · Émile Dupont (2) · Edward Arthur Geoghegan (2) · Hermann John Reiche (2) · Louis-Étienne Roze (2)
Inventor country:
Applicant person:
None (20) · Maurice Léger (3) · Hermann John Reiche (2) · Émile Dupont (2) · Franz Xaver Wels (2) · Francis Alexander Barton (2) · Louis-Étienne Roze (2) · Martin Jelalian (2) · Enrico Forlanini (2) · Edwin Richard Mumford (2)
Applicant is inventor:
Tech fields: (Click arrow to add another value)
Full specification filed date:
Application number:
None (38)
Granted:
Related to aircraft:
Patent agent:
None (28) · Munn & Co. (7) · Haseltine, Lake & Co. (5) · W. D. Rowlingson (3) · John P. Tarbox (3) · James R. Townsend (2) · None (2) · H. C. Everett Co. (2) · Marks & Clerk (2) · George H. Strong (2) · Michael J. Stark & Sons (2) · Edmund Hunt & Co. (2) · E. Imer-Schneider (2) · Victor J. Evans (2) · Arthur Otto Sachse (2)
National tech categories:
None (40) · FR 6.4 (14) · USPC 244/6 (5) · AU 90.3 (4) · HU V/h (4) · USPC 244/22 (3) · USPC 244/25 (3) · USPC 244/66 (3)
CPCs:
None (31) · CPC B64C23/005 (15) · CPC B64B1/00 (13) · CPC B64C33/00 (6) · CPC B64C39/005 (6) · CPC B64C27/04 (5) · CPC B64C2700/6281 (4) · CPC B64C35/00 (4) · CPC B64C39/00 (3) · CPC B64C29/0025 (3) · CPC B64C33/02 (3) · CPC B64B1/58 (3)
First filing:
Cites these patents:
Citations from after 1930:
Number of diagram pages:

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