Drilldown: Patents

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Patents > Tech fields: balloon & Grant date: 1910 - 1919 & Number of figures: 4-11

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None (3) · Melvin Vaniman (3) · Richard Wilcke (2) · Johann Schütte (2) · Albert Graff (2)
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None (10) · Johann Schütte (2) · Melvin Vaniman (2)
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