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Patents > National tech categories : BE K or CH 129b or USPC 89/41.19

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Tech fields:
airplane (212) · design (103) · propellers (102) · LTA (77) · hybrid (63) · stability (60) · wings (51) · frame (48) · propulsion (48) · control (43) · Aerodynamics (37) · construction (36) · lift (27) · sustentation (26) · rudder (23) · subsystem (23) · steering (20) · automatic stability (19) · navigation (18)
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Supplementary to patent:
None (227) · Patent BE-1909-214032 (32) · Patent BE-1907-199348 (15) · Patent BE-1913-255172 (3) · Patent BE-1907-197626 (3) · Patent FR-1900-299924 (2) · Patent FR-1913-467415 (2) · Patent FR-1913-468076 (2) · Patent BE-1913-259683 (2) · Patent FR-1911-430455 (2) · Patent BE-1910-225558 (2) · Patent BE-1909-218585 (2) · Patent FR-1911-426626 (2) · Patent US-1913-04-21 George Raymond Lawrence (2)
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Patent agent:
None (105) · A. Wunderlich & Cie, Ingénieurs-Conseils (56) · Raclot (22) · Duvinage (21) · J. Gevers (15) · Kirkpatrick (12) · E. Blum & Co. (12) · De Visscher et Graetz (11) · E. Imer-Schneider (10) · E. et G. Bede (8) · Biebuyck (8) · Raclot et Cie (6) · Gernaert (5) · Fritz Isler (5) · Verhaeghen (4) · Wilhelm Reinhard (4) · H. Kirchhofer (4) · Wunderlich (4) · Borghans-von Kilch et Cie (4) · A. Ritter (4)
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