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Patents > Year granted: 1913 & Tech fields : Aerodynamics or airplane or marine & IPCs : IPC B64C3/52 or None & Number of claims: 1-4

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None (5) · Louis Constantin (3) · Karl Bomhard (3) · Jan Jaakson (3) · Edmund Kikut (2) · Carl Franz Hubert Hertel (2) · Henry Seddon Wildeblood (2) · Carl Wilhelm Paul (2) · Hellmuth Hirth (2) · Max Richter (2)
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None (12) · Karl Bomhard (3) · Jan Jaakson (3) · Louis Constantin (3) · Hellmuth Hirth (2) · Edmund Kikut (2) · Carl Franz Hubert Hertel (2) · Carl Wilhelm Paul (2) · Max Richter (2)
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