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Patents > IPCs : IPC B64B1/00 or IPC B64C33/00 & Number of diagram pages: 1-3

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Tech fields:
LTA (234) · balloon (69) · frame (65) · propulsion (64) · None (63) · navigation (63) · dirigible (48) · airship (39) · hybrid (37) · stability (33) · flapping (32) · construction (31) · Design (30) · airplane (28) · car (24) · propeller (22) · balloons (21) · ornithopter (19) · wings (18) · rudder (18)
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None (281) · Patent FR-1913-472867 (4) · Patent AT-1912-75092 (3) · Patent FR-1913-467415 (3) · Patent ES-1906-38692‎ (3) · Patent IT-1913- (2) · Patent GB-1913-11207 (2) · Patent US-1913-1087946 (2) · Patent FR-1914-472867.19895 (2) · Patent BE-1912-07-11 Maiche et Legras (2) · Patent CH-1909-48028 (2) · Patent GB-1913-4191 (2) · Patent FR-1907-382794 (2) · Patent FR-1902-317598 (2)
Related to aircraft:
Patent agent:
None (106) · None (19) · Armengaud jeune (16) · Munn & Co. (10) · Boramé et Julien (10) · Haseltine, Lake & Co. (9) · E. Blétry (8) · Chassevent (8) · Brandon frères (7) · Lavoix et Mosès (6) · Hippolyte Josse (6) · Weismann et Marx (5) · C. Blétry (5)
National tech categories:
FR 6.4 (154) · None (64) · FR 6.3 (40) · USPC 244/30 (21) · USPC 244/22 (12) · DE 77h.2 (11) · DE 77 (9) · USPC 244/26 (9) · USPC 244/32 (7) · USPC 244/25 (6) · USPC 244/127 (5) · USPC 244/125 (5) · USPC 244/96 (5) · DE 77h (5) · USPC 244/97 (4) · USPC 104/22 (4) · USPC 24/713.8 (4)
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