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Patents > Tech fields : control or lift & IPCs: IPC B64C17/00 & CPCs: CPC B64C17/00 & Number of text pages: 2-3

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Jules Sandret (3) · Théophile Protin (2) · Burt Jackson Pressey (2) · Gaston-Marie-Eugène Balignant (2) · Camille Contal (2) · Adam Mortimer Singer (2)
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Jules Sandret (3) · Théophile Protin (2) · Burt Jackson Pressey (2) · Gaston-Marie-Eugène Balignant (2) · Camille Contal (2) · Adam Mortimer Singer (2)
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