Drilldown: Patents

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Patents > Year granted: 1910 - 1919 & Tech fields: rudder & Number of figures: 8-12

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Inventors:
Jean Georges Ramel (2) · Eduard Penkala (2) · John Anderson (2)
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None (5) · Eduard Penkala (2) · John Anderson (2) · Jean Georges Ramel (2)
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None (9)
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