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Patents > National tech categories : FR 20.4 or HU V/h & Number of text pages: 3-5

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None (18) · Vilmos Zurowec (2) · Hermann Ruthenberg (2) · Joseph de Pierpont de Burnot (2) · Franz Schneider (2) · Orville Wright (2) · Adalbert Plaček (2) · Wilbur Wright (2)
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None (19) · Vilmos Zurowec (2) · Adalbert Plaček (2) · Orville Wright (2) · Franz Schneider (2) · Joseph de Pierpont de Burnot (2) · Wilbur Wright (2) · Hermann Ruthenberg (2)
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None (20)
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None (66) · Patent BE-1913-07-12 Joseph de Pierpont de Burnot (2)
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