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Patents > Office : DE or RU or UN & Tech fields: balloon

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None (11) · Henry Boinet (3) · Sebastian Finsterwalder (2) · Walter Hermann von Mach (2) · Johann Schütte (2) · Louis-Étienne Roze (2) · August Riedinger (2)
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None (56) · Walter Herrmann von Mach (2)
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