When was the Scottish-born scientist died after whose invention "Kōbushō" had started an effort to make telephone receivers?
Oki Kibatarō Oki Kibatarō (沖 牙太郎 , 1848–1906) was an engineer formerly employed at a Japanese Ministry of Industry ("Kōbushō") factory. In 1877, only a year after Alexander Graham Bell's invention, "Kōbushō" had started an effort to make telephone receivers by reverse engineering and Oki was in the team that came up with the first prototype.
John Robert Mills John Robert Mills () (12 November 1916 – 6 May 1998), was a British physicist and scientific expert who played an important role in the development of Radar and the defence of Britain in World War II. After the war he continued his career working for various British government research establishments on a variety of projects until his retirement in 1977.