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Patents > National tech categories : FR 6.4 or USPC 244/81 & CPCs: CPC B64C13/00

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None (6) · Robert Esnault-Pelterie (3) · René Caudron (3) · Charles Bénard (2) · Roger Sommer (2) · Louis Blériot (2) · Hervé-Pierre Félix (2)
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None (7) · Robert Esnault-Pelterie (3) · René Caudron (3) · Charles Bénard (2) · Roger Sommer (2) · Louis Blériot (2) · Hervé-Pierre Félix (2)
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