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Patents > National tech categories : BE K or DE 77h.6 or USPC 237/12.30A

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Airplane (181) · propellers (104) · design (89) · LTA (76) · hybrid (62) · Propulsion (60) · propeller (50) · wings (44) · stability (41) · control (38) · aerodynamics (36) · frame (36) · construction (31) · sustentation (25) · lift (22) · subsystem (21) · rudder (20) · helicopter (19) · steering (18) · ascension (15)
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None (245) · Patent BE-1909-214032 (32) · Patent BE-1907-199348 (15) · Patent BE-1913-255172 (3) · Patent BE-1907-197626 (3) · Patent BE-1913-259683 (2) · Patent FR-1908-405961 (2) · Patent GB-1906-1436 (2) · Patent FR-1913-468076 (2) · Patent FR-1913-467415 (2) · Patent BE-1910-225558 (2) · Patent FR-1911-426626 (2) · Patent FR-1900-299924 (2) · Patent BE-1909-218585 (2) · Patent FR-1911-430455 (2) · Patent DE-1917-305040 (2)
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None (166) · A. Wunderlich & Cie, Ingénieurs-Conseils (56) · Raclot (22) · Duvinage (21) · J. Gevers (15) · Kirkpatrick (12) · De Visscher et Graetz (11) · Biebuyck (8) · E. et G. Bede (8) · Raclot et Cie (6) · Gernaert (5) · Verhaeghen (4) · Wunderlich (4) · Borghans-von Kilch et Cie (4) · le Comptoir indus. et tech. (anc. maison Picard) (3) · R. Wittebolle, Brussels, Belgium (3) · Rest (3) · Parette (3)
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