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Patents > Applicant type : Hermann Burkardt or INDIV or INDIV + COMPANY & Grant date: 1911 & Patent agent : Hippolyte Josse or Lloyd Wise & Co. or Marks & Clerk

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airplane (14) · construction (6) · stability (6) · None (5) · frame (4) · propeller (3) · design (3) · control (3) · navigation (3) · texture (2) · gyroscope (2) · wings (2) · propulsion (2) · airship (2) · steering (2) · fuselage (2) · wheels (2) · LTA (2)
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