When was the Scottish-born scientist died after whose invention "Kōbushō" had started an effort to make telephone receivers?
Alexander Graham Bell Alexander Graham Bell (March 3, 1847 – August 2, 1922) was a Scottish-born scientist, inventor, engineer, and innovator who is credited with patenting the first practical telephone and founding the American Telephone and Telegraph Company (AT&T) in 1885.
Mikhail Dolivo-Dobrovolsky Mikhail Osipovich Dolivo-Dobrovolsky (Russian: Михаи́л О́сипович Доли́во-Доброво́льский ; German: "Michail von Dolivo-Dobrowolsky" or "Michail Ossipowitsch Doliwo-Dobrowolski"; Polish: "Michał Doliwo-Dobrowolski" ; January 2 [O.S. December 21, 1861] 1862 in Gatchina near Saint Petersburg – November 15 [O.S. November 3] 1919 in Heidelberg, Germany), was a Polish-Russian engineer, electrician, and inventor. Born in a mixed family between a Polish noble family originating from Mazowsze, and a Russian noble family. Emigrated to Germany due to political persecution of Poles after the assassination of Alexander II of Russia (1881). He studied at the Darmstadt University of Technology (TH Darmstadt) in Germany. From 1887 he worked for AEG.