Drilldown: Patents

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Patents > Office : AT or RU & Inventor country : CA or CH or HU or NL & Applicant type : COMPANY+INDIV or Hermann Burkardt or INDIV & CPCs : CPC B64B1/40 or CPC B64C23/005 or None

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Tech fields:
airplane (8) · frame (7) · propellers (6) · LTA (6) · wings (4) · design (4) · biplane (4) · subsystem (3) · propulsion (3) · lift (3) · airfoil (3) · aerodynamics (3) · balloon (3)
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Showing below up to 34 results in range #1 to #34.

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