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Patents > Tech fields: Flapping & Citations from after 1930: None

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Office:
Inventors:
None (7) · Stefan Hunyor de Visoly (7) · Ruter William Springer (6) · Ludwig Schmidl (6) · Franz Xaver Wels (6) · Firmin Bousson (6) · Félix Michau (5) · Hermann Hassenbach (5) · Blaise Bontems (4) · Alois Laube Jr. (4) · Magloire Desjardins (4) · Watson F. Quinby (4)
Applicant person:
None (77) · Firmin Bousson (6) · Ruter William Springer (6) · Franz Xaver Wels (6) · Ludwig Schmidl (6) · Hermann Hassenbach (5) · Stefan Hunyor de Visoly (5) · Watson F. Quinby (4) · Felix Michau (4) · Alois Laube Jr. (4) · Magloire Desjardins (4) · Blaise Bontems (4) · Jules Materne (3) · Hermann John Reiche (3) · Friedrich Kopsch (3) · Henry Mesinger (3) · Newton Roberts Gordon (3) · Franz Wondra (3)
Applicant is inventor:
Tech fields: (Click arrow to add another value)
Full specification filed date:
Application number:
None (160) · 371992D (2)
Granted:
Supplementary to patent:
None (218) · 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 HU-1904-31053 (3) · Patent FR-1911-429078 (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. (12) · None (8) · C. Blétry (6) · Schwab (4) · 0 (3) · Brandon frères (3) · Boult, Wade & Tennant (3) · Armengaud jeune (3) · H. C. Everett Co. (3) · H. Bœttcher fils (3)
National tech categories:
FR 6.4 (59) · None (52) · HU V/h (21) · USPC 244/22 (20) · DE 77h.10 (18) · AT 77d (18) · USPC 244/28 (15) · USPC 244/64 (12) · USPC 244/72 (12) · BE K (10) · USPC 244/11 (8) · GB 4 propel & steer (8) · DE 77h (6) · GB 4 without buoyant (6) · GB 4 (5) · FR 6.3 (5) · DE 77 (5) · IT 8 (4)
CPCs:
None (125) · CPC B64C33/02 (85) · CPC B64C33/00 (33) · CPC B64B1/00 (20) · CPC B64C31/04 (11) · CPC B64C39/005 (9) · CPC B64C11/006 (6) · CPC B64C23/005 (4) · CPC B64C39/003 (3) · CPC B64C3/54 (3) · CPC B64C3/385 (2) · CPC B64C2700/6281 (2) · CPC B64C13/00 (2)
First filing:
Citations from after 1930:
Number of diagram pages:

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