Drilldown: Patents

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Patents > Tech fields : control or lift & Publication date: 1910 - 1919 & Number of text pages: 4-30 & Number of claims: 1-4

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Isaac Bell (3) · Alfred John Macy (2) · Paul Lehmann (2) · Henri-Marie Coandă (2)
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Isaac Bell‎ (3) · Paul Lehmann (2) · Alfred John Macy (2) · Henri-Marie Coandă (2)
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