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Patents > Office : FR or GB or MX & Supplementary to patent : Patent BE-1909-214032 or Patent HU-1901-24148 or Patent NO-1915-12-15 Carl Alfred Johansson or None & Patent agent: None

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None (1626) · FR (1417) · GB (549) · US (233) · DE (221) · IT (45) · AT (44) · CH (42) · BE (24) · CA (20) · MX (19) · AU (11) · NL (10) · SE (9) · Great Britain (8) · NO (8) · NZ (7) · ES (7) · RU (6) · HU (6)
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National tech categories:
None (3452) · FR 6.4 (379) · FR 6.3 (157) · FR 5 (98) · MX F. III (32) · GB 4 propel & steer (31) · GB 4 (23) · GB 4 with buoyant (22) · GB 4 without buoyant (20) · FR 6 (14) · FR 6.2 (11) · FR 3 (9) · GB 4 aërostats (9) · FR 2 (8) · FR 5.8 (7) · GB 4 framework (6) · FR 20 (6) · GB 4 aëroplanes (6) · FR 10.1 (6) · MX F. II (6)
IPCs:
None (3771) · IPC B64B1/00 (90) · IPC B64C17/00 (51) · IPC B64C39/00 (47) · IPC B64C1/00 (46) · IPC B64B1/58 (38) · IPC B64C11/00 (28) · IPC B64C23/00 (16) · IPC B64C27/04 (15) · IPC B64C3/00 (15) · IPC B64C33/00 (12) · IPC B64B1/40 (11) · IPC B64C3/38 (10) · IPC B64B1/62 (9) · IPC B64C3/18 (9) · IPC B64C33/02 (9) · IPC B64C3/54 (9) · IPC B64C3/56 (8) · IPC B64C35/00 (8)
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