Drilldown: Patents

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Patents > Tech fields: propellers & Filing date: 1900 - 1999 & Supplementary to patent: None

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Patent agent:
None (204) · Armengaud jeune (23) · None (14) · A. Wunderlich & Cie, Ingénieurs-Conseils (8) · E. Blétry (7) · Lavoix et Mosès (7) · Boult, Wade & Tennant (6) · Schwab (5) · Hippolyte Josse (5) · Charles Dony (5) · Y. Rabilloud et fils (5) · H. Bœttcher fils (5) · Dom. Casalonga (5) · Weismann et Marx (5)
National tech categories:
FR 6.4 (142) · None (127) · HU V/h (61) · BE K (41) · FR 6.2 (22) · AT 77d (19) · FR 6.3 (12) · DE 77h.6 (7) · USPC 244/23R (3) · NL 62 (3) · CH 129b (3) · USPC 244/65 (3) · FR 6.1 (3) · FR 5.8 (2) · USPC 244/87 (2) · NL 62.6 (2) · FR 5.3 (2) · DE 77h.5 (2) · USPC 244/50 (2)
IPCs:
None (211) · IPC B64C11/00 (42) · IPC B64C39/00 (27) · IPC B64C11/04 (15) · IPC B64C11/20 (14) · IPC B64C11/16 (13) · IPC B63H1/12 (12) · IPC B64C17/00 (11) · IPC B64C1/00 (10) · IPC B64C23/00 (10) · IPC B64B1/00 (9) · IPC B64C27/04 (9) · IPC B64C11/30 (6) · IPC B64D27/00 (6) · IPC B64C33/02 (5) · IPC B64C3/56 (4) · IPC B64D35/04 (4)
CPCs:
None (163) · CPC B64C11/006 (27) · CPC B64C39/00 (18) · CPC B64C11/16 (17) · CPC B64C11/04 (15) · CPC B64C11/00 (13) · CPC B64C2700/6295 (12) · CPC B64C23/005 (12) · CPC B64C17/00 (11) · CPC B64B1/00 (11) · CPC B64C11/20 (10) · CPC B64C2700/6274 (10) · CPC B64D27/00 (7) · CPC B64C2700/6281 (7) · CPC B64C2700/6218 (7) · CPC B63H1/26 (7) · CPC B64C13/00 (6)
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