Bell Telephone Company companies and to provide further funds for expansion of its overall telephone infrastructure. On April 17, 1880, National Bell was split into the American Bell Telephone Company, led by Theodore Vail as general manager, and with the International Bell Telephone Company (IBTC) as a holding company for its international subsidiaries. IBTC's first non-North American subsidiary was the Bell Telephone Manufacturing Company (BTM), established by Hubbard at Antwerp, Belgium, in 1882. The Bell System's Bell Telephone Company of Canada subsidiary, wholly owned by the National Bell, had been established two years earlier. Alexander Graham Bell's ten shares of Bell Telephone Company
Bell (satellite) control system, however onboard sensors can be used to determine and monitor the satellite's attitude. The cameras built into the phones aboard "Bell" and its sister satellite "Graham" have been used to return images of the Earth from space. Unlike "Graham", Bell has an external Iridium modem attached to one of its side. Independent battery can supply power for the modem for 2–3 days. "Bell" was named after Alexander Graham Bell, the inventor of the telephone. The two other PhoneSat spacecraft launched aboard the same rocket were named "Alexander" and "Graham". The three PhoneSat spacecraft, along with the commercial Dove