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Patents > CPCs : CPC B64C13/00 or CPC B64C3/56 & Number of figures: 1-2

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None (6) · Anton Flettner (6) · René Caudron (4) · Robert Esnault-Pelterie (3) · Hugh Laussat Willoughby (2) · Louis Bastier (2) · Harris Booth (2) · Halvor Gaara (2) · John Law Garsed (2)
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None (9) · Anton Flettner (6) · René Caudron (4) · Robert Esnault-Pelterie (3) · Halvor Gaara (2) · Louis Bastier (2) · John Law Garsed (2) · Harris Booth (2) · Hugh Laussat Willoughby (2)
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None (12)
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