Drilldown: Patents

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Patents > Tech fields : Rudder or aerodynamics & Patent agent: None

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None (213)
Granted:
Supplementary to patent:
None (277) · Patent US-1903-821393 (5) · Patent GB-1911-12232 (4) · Patent ES-1911-50083‎ (3) · Patent DE-1912-05-04 Otto Albin Budig (3) · Patent DE-1907-202942 (3) · Patent FR-1906-363017 (3) · Patent CH-1912-62201 (3)
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National tech categories:
None (70) · HU V/h (61) · FR 6.4 (44) · AT 77d (32) · BE K (19) · DE 77h.5 (17) · GB 4 with buoyant (7) · IT 8 (7) · DE 77 (6) · GB 4 propel & steer (5) · USPC 244/90R (5) · DK 77 (5) · USPC 244/51 (5) · USPC 244/13 (4) · USPC 244/233 (4) · RU Group V (4) · FR 6.2 (4) · USPC 244/52 (4)
IPCs:
None (273) · IPC B64C17/00 (16) · IPC B64C1/00 (16) · IPC B64B1/00 (11) · IPC B64C39/00 (10) · IPC B64C13/00 (10) · IPC B64C3/14 (6) · IPC B64C9/02 (5) · IPC B64C11/00 (4) · IPC B64B1/58 (3) · IPC B64C33/02 (3) · IPC B64C33/00 (3) · IPC B64C3/54 (3) · IPC B64C11/20 (3) · IPC B64C3/18 (3)
CPCs:
None (211) · CPC B64C13/00 (23) · CPC B64C17/00 (19) · CPC B64C2700/6295 (15) · CPC B64B1/00 (14) · CPC B64C3/14 (9) · CPC B64C2700/6218 (8) · CPC B64C39/00 (7) · CPC B64C3/385 (6) · CPC B64C9/02 (5) · CPC B64C11/00 (5) · CPC B64C2700/6256 (5) · CPC B64C33/00 (5) · CPC B64B1/40 (5) · CPC B64C9/38 (4) · CPC B64C11/006 (4) · CPC B64C33/02 (4) · CPC B64C2700/6219 (4) · CPC B64C9/00 (4)
First filing:
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Citations from after 1930:
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