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Patents > National tech categories : BE K or USPC 237/12.30A or USPC 244/22

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Tech fields:
airplane (186) · propellers (96) · design (88) · LTA (78) · hybrid (68) · propulsion (66) · Frame (56) · wings (50) · stability (44) · flapping (39) · control (38) · aerodynamics (35) · construction (30) · rudder (29) · navigation (25) · Sustentation (25) · lift (22) · None (22) · ornithopter (20) · steering (17)
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None (333)
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Supplementary to patent:
None (261) · Patent BE-1909-214032 (32) · Patent BE-1907-199348 (15) · Patent BE-1907-197626 (3) · Patent BE-1913-255172 (3) · Patent BE-1909-218585 (2) · Patent FR-1913-468076 (2) · Patent FR-1900-299924 (2) · Patent BE-1913-259683 (2) · Patent FR-1911-426626 (2) · Patent FR-1911-430455 (2) · Patent BE-1910-225558 (2) · Patent FR-1913-467415 (2)
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None (143) · A. Wunderlich & Cie, Ingénieurs-Conseils (56) · Raclot (22) · Duvinage (21) · J. Gevers (15) · Kirkpatrick (12) · De Visscher et Graetz (11) · E. et G. Bede (8) · Biebuyck (8) · Raclot et Cie (6) · Gernaert (5) · Verhaeghen (4) · Wunderlich (4) · Borghans-von Kilch et Cie (4) · Rest (3) · C. A. Snow & Co. (3) · Munn & Co. (3) · Parette (3) · R. Wittebolle, Brussels, Belgium (3) · le Comptoir indus. et tech. (anc. maison Picard) (3)
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