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Patents > Tech fields : Airship or stability & Supplementary to patent : Patent US-1909-970771 or None & Number of text pages: 1-2

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None (174) · None (20) · Armengaud jeune (17) · J. Bonnet-Thirion (7) · E. Blétry (7) · Charles Dony (6) · Victor J. Evans (6) · Lavoix et Mosès (5) · Chassevent (5) · H. Bœttcher fils (4) · Marks & Clerk (4) · Munn & Co. (4) · Hippolyte Josse (4) · J. Germain (3) · L. Chassevent (3)
National tech categories:
FR 6.4 (151) · None (46) · HU V/h (44) · AT 77d (24) · DE 77 (11) · DE 77h.5 (7) · USPC 244/79 (6) · FR 6.3 (6) · DE 77h.4 (5) · USPC 244/80 (5) · DE 77h.15 (5) · USPC 244/93 (4) · DK 77 (4) · USPC 244/45R (4)
IPCs:
None (169) · IPC B64C17/00 (74) · IPC B64C1/00 (61) · IPC B64B1/00 (29) · IPC B64C39/00 (17) · IPC B64C13/00 (13) · IPC B64C17/06 (9) · IPC B64B1/58 (6) · IPC B64B1/40 (5) · IPC B64C11/00 (5) · IPC B64C3/54 (5) · IPC B64C33/02 (4) · IPC B64B1/22 (4) · IPC B64C33/00 (4) · IPC F42B10/00 (3) · IPC B64C13/04 (3) · IPC B64C9/00 (3) · IPC B64C3/38 (3) · CPC B64C17/00 (3)
CPCs:
None (100) · CPC B64C17/00 (89) · CPC B64B1/00 (33) · CPC B64C2700/6218 (27) · CPC B64C13/00 (21) · CPC B64C2700/6212 (18) · CPC B64C2700/6295 (17) · CPC B64C17/06 (14) · CPC B64C2700/6219 (11) · CPC B64C2700/6256 (11) · CPC B64C39/00 (11) · CPC B64C2700/6214 (8) · CPC B64C1/00 (8) · CPC B64C3/385 (8) · CPC B64B1/40 (8) · CPC B64B1/58 (7) · CPC B64C2700/6216 (7) · CPC B64C23/005 (7)
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