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Patents > Applicant type : INDIV or INIDV & Tech fields : Airship or propellers & Granted: Yes

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Related to aircraft:
National tech categories:
FR 6.4 (317) · None (277) · HU V/h (123) · BE K (56) · FR 6.2 (53) · FR 6.3 (45) · AT 77d (35) · DE 77 (15) · DE 77h.6 (9) · FR 6 (7) · CH 129b (6) · DK 77 (6) · USPC 244/65 (5) · USPC 244/50 (5) · FR 5 (5) · USPC 244/125 (5)
IPCs:
None (499) · IPC B64C39/00 (70) · IPC B64C11/00 (67) · IPC B64B1/00 (55) · IPC B64C23/00 (27) · IPC B64C27/04 (23) · IPC B64C11/16 (22) · IPC B63H1/12 (22) · IPC B64C11/04 (20) · IPC B64C1/00 (19) · IPC B64C11/20 (19) · IPC B64C17/00 (17) · IPC B64B1/58 (15) · IPC B64C33/02 (13) · IPC B64C11/36 (11) · IPC B64C35/00 (9) · IPC B64D27/00 (8) · IPC B64C27/00 (8) · IPC B64D35/04 (8) · IPC B64B1/40 (8)
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