Drilldown: Patents

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Patents > Granted: Yes & Supplementary to patent : Patent FR-1916-502839 or Patent US-1913-04-21 George Raymond Lawrence or None & Assigned to : Établissements de Dion-Bouton or None & IPCs : IPC B64C27/04 or IPC B64C3/18 or IPC B64C33/00 or IPC B64C39/00

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Tech fields:
Airplane (146) · propulsion (85) · Design (80) · Frame (78) · None (77) · wings (60) · construction (58) · propellers (45) · stability (44) · helicopter (40) · aerodynamics (32) · flapping (31) · lift (30) · control (29) · whole (29) · navigation (29) · hybrid (25) · fuselage (22) · sustentation (22)
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Patent agent:
None (140) · None (34) · Armengaud jeune (23) · J. Germain (13) · Weismann et Marx (12) · Marks & Clerk (9) · Munn & Co. (7) · Brandon freres (7) · L. Chassevent (7) · E. Blétry (7) · Chassevent (6) · Boult, Wade & Tennant (6) · Dupont et Elluin (6) · J. S. Withers & Spooner (5)
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National tech categories:
FR 6.4 (233) · None (148) · FR 6.3 (17) · USPC 244/45R (12) · USPC 244/22 (12) · DE 77h.5 (11) · USPC 244/13 (9) · USPC 244/11 (7) · DE 77h.11 (5) · DE 77 (4) · USPC 244/70 (4) · USPC 244/72 (4) · USPC 244/9 (4) · USPC 244/20 (4) · USPC 244/64 (3) · FR 6.2 (3)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C39/00 (188) · CPC B64C2700/6295 (177) · CPC B64C2700/6281 (51) · CPC B64C39/005 (48) · CPC B64C33/00 (45) · CPC B64C27/04 (39) · CPC B64C39/08 (36) · CPC B64C3/18 (29) · CPC B64C3/185 (20) · CPC B64C39/008 (17) · CPC B64C27/12 (16) · CPC B64C33/02 (14) · CPC B64C39/003 (9) · CPC B64C39/006 (8) · CPC B64C27/52 (5) · CPC B64C27/20 (5) · CPC B64C39/06 (4) · CPC B64C39/062 (4)
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