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Patents > Inventor location: None & Tech fields: flapping

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Office:
Inventors:
Ludwig Schmidl (7) · Stefan Hunyor de Visoly (7) · None (6) · Franz Xaver Wels (6) · Ruter William Springer (6) · Hermann Hassenbach (5) · Firmin Bousson (5) · Félix Michau (5) · Watson F. Quinby (4) · Magloire Desjardins (4) · Robert Strehlau (4) · Alois Laube Jr. (4)
Inventor location: (Click arrow to add another value)
Applicant person:
None (63) · Ludwig Schmidl (7) · Franz Xaver Wels (6) · Ruter William Springer (6) · Stefan Hunyor de Visoly (5) · Firmin Bousson (5) · Hermann Hassenbach (5) · Magloire Desjardins (4) · Watson F. Quinby (4) · Alois Laube Jr. (4) · Felix Michau (4) · Hermann John Reiche (3) · Robert Strehlau (3) · Blaise Bontems (3) · Julius Uherkovich de Uherkócz (3) · Jules Materne (3) · Walter Villa Gilbert (3) · Friedrich Kopsch (3) · Franz Wondra (3) · Newton Roberts Gordon (3)
Applicant type:
Applicant is inventor:
Tech fields: (Click arrow to add another value)
Full specification filed date:
Application number:
None (159) · 371992D (2)
Granted:
Supplementary to patent:
None (221) · Patent AT-1912-75092 (5) · Patent SE-1906-23283 (4) · Patent FR-1908-407411 (4) · Patent FR-1899-292828 (4) · Patent US-1916-1208684 (4) · Patent FR-1911-429078 (3) · Patent HU-1904-31053 (3) · Patent AT-1907-37570 (3) · Patent SE-1906-25199 (3)
Related to aircraft:
Patent agent:
None (136) · Munn & Co. (16) · None (7) · C. Blétry (5) · Armengaud jeune (4) · H. C. Evert & Co. (3) · Brandon frères (3) · Victor J. Evans (3) · Schwab (3)
National tech categories:
None (50) · FR 6.4 (50) · USPC 244/22 (29) · DE 77h.10 (22) · AT 77d (20) · HU V/h (19) · USPC 244/28 (16) · USPC 244/64 (12) · USPC 244/72 (11) · BE K (9) · GB 4 propel & steer (8) · USPC 244/11 (7) · GB 4 without buoyant (6) · DE 77 (6) · FR 6.3 (5) · DE 77h (4)
CPCs:
None (114) · CPC B64C33/02 (97) · CPC B64C33/00 (33) · CPC B64B1/00 (19) · CPC B64C31/04 (10) · CPC B64C39/005 (10) · CPC B64C11/006 (6) · CPC B64C3/54 (4) · CPC B64C23/005 (3) · CPC B64C17/00 (2) · CPC B64C3/385 (2) · CPC B64C39/026 (2) · CPC B64C3/14 (2) · CPC B64C13/00 (2) · CPC B64C39/003 (2)
First filing:
Citations from after 1930:
Number of diagram pages:

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