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Patents > Applicant firm : Varioplane Company or None & National tech categories: HU V/h

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Tech fields:
airplane (155) · Design (103) · Propellers (85) · Subsystem (67) · Construction (61) · Frame (53) · Airship (50) · wings (48) · Whole (48) · stability (48) · Propulsion (44) · Aerodynamics (40) · LTA (39) · automatic stability (28) · control (24) · lift (22) · dirigibles (19) · flapping (19) · Steering (18) · helicopter (18)
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Supplementary to patent:
None (188) · Patent US-1903-821393 (2) · Patent BE-1913-07-12 Joseph de Pierpont de Burnot (2) · Patent FR-1909-403985 (2) · Patent FR-1909-399456 (2) · Patent AT-1911-57225 (2)
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