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Keywords: MarthaCoston.jpg ca Martha Jane Coston va ser una inventora i dona de negocis coneguda principalment per la seva invenció de la bengala de Coston en Martha Jane Coston December 12 1826 “ July 9 1904 was an inventor and businesswoman best knowledge own for her invention of the Coston flare a device for signaling at sea 1904-07-09 http //www americancivilwarstory com/images/247xNxMaryCoston jpg pagespeed ic 1OEaBVktXZ jpg author other versions PD-old-70-1923 Inventors Baltimore |