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Patents > IPCs : IPC B64B1/00 or IPC B64B1/62 & CPCs: CPC B64B1/00 & Citations from after 1930: None

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Tech fields:
LTA (290) · frame (76) · balloon (68) · propulsion (65) · navigation (62) · dirigible (46) · Airship (46) · design (36) · construction (35) · stability (33) · Dirigibles (31) · hybrid (29) · Rigid (26) · balloons (25) · car (23) · safety (23) · propeller (22) · compartments (21) · ballonet (21) · aerostat (18)
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Supplementary to patent:
None (266) · Patent FR-1913-472867 (4) · Patent FR-1913-467415 (3) · Patent ES-1906-38692‎ (3) · Patent IT-1913- (2) · Patent FR-1907-382794 (2) · Patent GB-1913-11207 (2) · Patent FR-1902-317598 (2) · Patent FR-1914-472867.19895 (2) · Patent US-1913-1087946 (2) · Patent BE-1912-07-11 Maiche et Legras (2)
Related to aircraft:
Patent agent:
None (167) · Armengaud jeune (13) · None (10) · Boramé et Julien (10) · Haseltine, Lake & Co. (9) · Chassevent (8) · Brandon freres (8) · Hippolyte Josse (7) · G. Petiau (5) · C. Blétry (5) · Lavoix et Mosès (5) · de Bongé (4) · Munn & Co. (4) · Boult, Wade & Tennant (4) · Ed. Wolf (4) · Marks & Clerk (4)
National tech categories:
FR 6.4 (170) · FR 6.3 (50) · None (44) · USPC 244/30 (27) · USPC 244/26 (13) · DE 77h.2 (11) · USPC 244/25 (9) · DE 77 (7) · USPC 244/125 (5) · USPC 24/713.8 (4) · USPC 244/67 (4) · USPC 244/29 (3) · USPC 244/28 (3) · FR 6.2 (3) · USPC 244/99 (3)
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