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Patents > Tech fields : hybrid or navigation & Number of text pages: 3-6

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Supplementary to patent:
None (360) · Patent US-1909-970771 (4) · Patent GB-1912-2540 (3) · Patent FR-1907-377174 (3) · Patent AT-1912-75092 (3) · Patent FR-1908-393976 (3) · Patent US-1906-850616 (3)
Related to aircraft:
Patent agent:
None (123) · Munn & Co. (16) · Armengaud jeune (15) · None (13) · Haseltine, Lake & Co. (10) · Victor J. Evans (9) · Lavoix et Mosès (8) · Marks & Clerk (7) · Herbert Haddan & Co. (6) · R. S. & A. B. Lacey (5) · C. A. Snow & Co. (5) · Wheatley & Mackenzie (5) · Schwab (4) · Edward Evans & Co. (4) · H. Bœttcher fils (4) · Boult, Wade & Tennant (4)
National tech categories:
None (122) · FR 6.4 (112) · USPC 244/90R (11) · DE 77 (11) · USPC 244/6 (11) · FR 6.3 (10) · USPC 244/30 (10) · USPC 244/22 (9) · RU Group V (8) · USPC 244/46 (7) · GB 4 propel & steer (6) · USPC 244/25 (6) · USPC 244/80 (6) · USPC 244/26 (6) · USPC 244/66 (6) · USPC 244/51 (6)
IPCs:
None (247) · IPC B64B1/00 (36) · IPC B64C39/00 (24) · IPC B64C23/00 (18) · IPC B64C33/02 (16) · IPC B64C27/04 (13) · IPC B64B1/58 (11) · IPC B64C33/00 (8) · IPC B64C1/00 (7) · IPC B64C3/00 (6) · IPC B64C35/00 (6) · IPC B64C3/38 (6) · IPC B64C3/52 (5) · IPC B64C17/00 (5) · IPC B64C13/00 (5) · IPC CPC B64C13/00 (5) · IPC B64B1/40 (4)
CPCs:
None (107) · CPC B64B1/00 (55) · CPC B64C23/005 (41) · CPC B64C33/02 (26) · CPC B64C13/00 (24) · CPC B64C39/005 (17) · CPC B64C17/00 (13) · CPC B64C2700/6295 (13) · CPC B64B1/58 (12) · CPC B64C33/00 (12) · CPC B64C39/00 (11) · CPC B64C2700/6281 (9) · CPC B64C27/04 (9) · CPC B64C3/385 (8) · CPC B64C3/52 (7) · CPC B64C39/08 (7) · CPC B64C35/00 (7) · CPC B64C9/00 (7) · CPC B64B1/40 (6) · CPC B64C2700/6274 (6)
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