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Patents > Year filed: 1910 - 1919 & Office : ?? or BE or CH or DEG or DK or IT & CPCs: None

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Tech fields:
airplane (204) · design (94) · propellers (69) · stability (66) · frame (59) · wings (52) · LTA (47) · propulsion (42) · control (41) · construction (39) · Aerodynamics (36) · hybrid (31) · subsystem (30) · Automatic stability (24) · Lift (21) · rudder (21) · navigation (20) · Safety (19) · landing (18) · sustentation (17)
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Supplementary to patent:
None (241) · Patent BE-1909-214032 (11) · Patent FR-1911-430455 (5) · Patent GB-1913-16499 (4) · Patent NO-1915-12-15 Carl Alfred Johansson (3) · Patent US-1913-04-21 George Raymond Lawrence (3) · Patent BE-1913-255172 (3)
Related to aircraft:
Patent agent:
None (177) · A. Wunderlich & Cie, Ingénieurs-Conseils (29) · Raclot (21) · J. Gevers (16) · Duvinage (15) · Kirkpatrick (11) · E. Blum & Co. (10) · E. Imer-Schneider (8) · De Visscher et Graetz (8) · E. et G. Bede (7) · Biebuyck (7) · H. Kirchhofer (6) · A. Ritter (6) · Wilhelm Reinhard (5) · Verhaeghen (4) · Gernaert (4) · Borghans-von Kilch et Cie (4)
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Citations from after 1930:
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