Drilldown: Patents

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Patents > Applicant firm: None & Tech fields : Airship or navigation & Patent agent: None

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Supplementary to patent:
None (623) · Patent US-1903-821393 (5) · Patent US-1909-970771 (5) · Patent FR-1902-328044 (4) · Patent FR-1841-9265 (4) · Patent FR-1836-5429 (3) · Patent CH-1899-18666 (3) · Patent AU-1909-15563 (3) · Patent DE-1909-Wilcke-Graff (3)
Related to aircraft:
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National tech categories:
None (207) · FR 6.3 (60) · HU V/h (54) · FR 6.4 (50) · DE 77 (38) · FR 5 (31) · AT 77d (29) · IT 8 (25) · USPC 244/30 (14) · FR 6 (12) · USPC 244/22 (12) · USPC 244/51 (11) · DK 77 (10) · DE 77h.5 (9) · USPC 244/97 (9) · DE 77h (9) · GB 4 propel & steer (8) · USPC 244/66 (8) · USPC 244/52 (8)
IPCs:
None (592) · IPC B64B1/00 (43) · IPC B64C33/02 (13) · IPC B64B1/58 (12) · IPC B64C39/00 (12) · IPC CPC B64C13/00 (10) · IPC B64B1/40 (9) · IPC B64C33/00 (7) · IPC B64C13/00 (7) · IPC B64B1/62 (6) · IPC B64C11/00 (6) · IPC B64C9/00 (5) · IPC B64B (5) · IPC B64B1/06 (3) · IPC B64C3/38 (3) · IPC B64C39/008 (3)
CPCs:
None (492) · CPC B64B1/00 (57) · CPC B64C13/00 (28) · CPC B64C33/02 (24) · CPC B64B1/58 (14) · CPC B64C23/005 (14) · CPC B64B1/40 (13) · CPC B64C2700/6295 (12) · CPC B64C39/005 (11) · CPC B64B1/62 (10) · CPC B64C3/385 (9) · CPC B64C9/00 (9) · CPC B64C17/00 (8) · CPC B64C33/00 (7) · CPC B64C9/38 (7) · CPC B64C11/001 (5) · CPC B64C39/008 (5) · CPC B64C39/00 (5)
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Citations from after 1930:
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