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Patents > Office : DE or IN or Other & Tech fields: flapping

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Office: (Click arrow to add another value)
Applicant person:
None (75) · Ludwig Schmidl (7) · Ruter William Springer (6) · Franz Xaver Wels (6) · Firmin Bousson (6) · Stefan Hunyor de Visoly (5) · Hermann Hassenbach (5) · Henry Mesinger (4) · Watson F. Quinby (4) · Magloire Desjardins (4) · Alois Laube Jr. (4) · Felix Michau (4) · Blaise Bontems (4) · Hermann John Reiche (3) · Newton Roberts Gordon (3) · Franz Wondra (3) · Walter Villa Gilbert (3) · Julius Uherkovich de Uherkócz (3) · Friedrich Kopsch (3) · Jules Materne (3)
Applicant is inventor:
Tech fields: (Click arrow to add another value)
Full specification filed date:
Application number:
None (169) · 371992D (2)
Granted:
Supplementary to patent:
None (249) · Patent AT-1912-75092 (5) · Patent SE-1906-23283 (5) · Patent FR-1899-292828 (5) · Patent FR-1908-407411 (4) · Patent US-1916-1208684 (4) · Patent US-1909-940701 (3) · Patent FR-1911-429078 (3) · Patent HU-1904-31053 (3) · Patent AT-1907-37570 (3) · Patent SE-1906-25199 (3) · Patent FR-1885-168266 (3)
Related to aircraft:
Patent agent:
None (145) · Munn & Co. (17) · None (10) · C. Blétry (6) · Schwab (4) · Armengaud jeune (4) · H. C. Everett Co. (3) · H. Bœttcher fils (3) · Brandon frères (3) · Boult, Wade & Tennant (3) · Victor J. Evans (3) · 0 (3)
National tech categories:
FR 6.4 (61) · None (54) · USPC 244/22 (29) · HU V/h (21) · AT 77d (20) · USPC 244/28 (19) · DE 77h.10 (18) · USPC 244/72 (15) · USPC 244/64 (14) · BE K (10) · USPC 244/11 (9) · GB 4 propel & steer (8) · DE 77h (6) · GB 4 without buoyant (6) · FR 6.3 (5) · GB 4 (5) · DE 77 (5) · IT 8 (4)
CPCs:
None (127) · CPC B64C33/02 (101) · CPC B64C33/00 (35) · CPC B64B1/00 (25) · CPC B64C31/04 (12) · CPC B64C39/005 (11) · CPC B64C11/006 (7) · CPC B64C23/005 (4) · CPC B64C3/54 (4) · CPC B64C39/003 (3) · CPC B64C39/026 (2) · CPC B64C3/385 (2) · CPC B64C2700/6281 (2) · CPC B64C3/14 (2) · CPC B64C17/00 (2) · CPC B64C13/00 (2)
First filing:
Citations from after 1930:
Number of diagram pages:

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