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Patents > Tech fields : hydrogen or stability & Number of text pages: 1-2

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Inventor location:
None (474) · Seine (11) · Budapest (11) · Nord (9) · Paris (5) · Seine-et-Oise (5) · Hérault (4) · Meurthe-et-Moselle (4) · England (3)
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Full specification filed date:
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Granted:
Supplementary to patent:
None (360) · Patent FR-1909-399456 (6) · Patent NO-1915-12-15 Carl Alfred Johansson (6) · Patent AT-1913-66955 (4) · Patent DE-1909-02-25 Hugo Erdmann (3) · Patent FR-1909-399456.11513 (3) · Patent DE-1912-05-04 Otto Albin Budig (3) · Patent HU-1909-49726 (3) · Patent FR-1911-446282 (3)
Related to aircraft:
Patent agent:
None (182) · None (38) · Armengaud jeune (31) · J. Bonnet-Thirion (12) · E. Blétry (10) · J. Germain (9) · Charles Dony (9) · Victor J. Evans (8) · H. Boettcher fils (7) · Munn & Co. (7) · Lavoix et Mosès (6) · Abel & Imray (6) · Schwab (5) · Marks & Clerk (5) · Hippolyte Josse (5) · C. Baumann (4) · Brandon frères (4) · Haseltine, Lake & Co. (4) · Chassevent (4) · Ad. Sturm (4)
National tech categories:
FR 6.4 (253) · None (75) · AT 77d (28) · HU V/h (27) · DE 77h.5 (22) · DE 77 (9) · CH 129b (8) · USPC 244/79 (7) · USPC 244/80 (7) · USPC 244/93 (6) · USPC 244/45R (6) · FR 6.3 (5) · USPC 244/35R (4) · DK 77 (4) · USPC 244/76R (4) · DE 77h.15 (4)
IPCs:
None (191) · IPC B64C17/00 (147) · IPC B64C1/00 (110) · IPC B64C39/00 (22) · IPC B64B1/00 (21) · IPC B64C13/00 (16) · IPC B64C17/06 (14) · IPC B64C3/38 (12) · IPC B64C3/54 (9) · IPC B64B1/40 (7) · IPC B64C17/04 (6) · IPC B64B1/58 (5) · IPC B64C13/04 (5) · CPC B64C17/00 (4) · IPC B64C33/00 (4)
CPCs:
CPC B64C17/00 (173) · None (101) · CPC B64C2700/6218 (51) · CPC B64C2700/6212 (33) · CPC B64C13/00 (33) · CPC B64C17/06 (21) · CPC B64B1/00 (21) · CPC B64C2700/6295 (17) · CPC B64C2700/6219 (17) · CPC B64C2700/6214 (16) · CPC B64C3/385 (16) · CPC B64C2700/6256 (15) · CPC B64C1/00 (15) · CPC B64C39/00 (14) · CPC B64B1/40 (11) · CPC B64C2700/6216 (10) · CPC B64C23/005 (7) · CPC B64C2700/6228 (7) · CPC B64C13/24 (7) · CPC B64C39/08 (7)
First filing:
Citations from after 1930:
Number of text pages:
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