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Patents > Year granted: 1919 & Tech fields : Airship or propeller or None

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Patent agent:
None (234) · None (9) · Paul Blum (6) · Société G. Breton, P. Audy, J. Rousset, A. Vergé (5) · Brewer & Son (5) · M. Zerolo (5) · Lavoix et Moses (4) · Armengaud jeune (4) · Brandon frères (4) · John P. Tarbox (4) · Marks & Clerk (4)
IPCs:
None (232) · IPC B64C3/00 (13) · IPC B64C35/00 (6) · IPC B64C39/00 (6) · IPC B64C11/00 (6) · IPC B64C1/00 (5) · IPC B64C27/04 (5) · IPC B64B1/00 (5) · IPC B64C17/00 (4) · IPC B64C13/00 (4) · IPC B64C3/38 (4) · IPC B64C3/18 (3)
CPCs:
CPC B64C3/00 (27) · None (25) · CPC B64C23/005 (22) · CPC B64C2700/6295 (20) · CPC B64C2700/6235 (19) · CPC B64C13/00 (14) · CPC B64C39/00 (13) · CPC B64C35/00 (13) · CPC B64C2700/6274 (11) · CPC B64B1/00 (10) · CPC B64C11/00 (9) · CPC B64C2001/0063 (8) · CPC B64C17/00 (8) · CPC B64C1/065 (7) · CPC B64C33/02 (7) · CPC B64C3/385 (6) · CPC B64C11/04 (6) · CPC B64C2700/6256 (6) · CPC B64B1/40 (6)
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