Ernst Werner von Siemens (December 13, 1816 – December 6, 1892) was a German inventor and industrialist. Werner Siemens was born in Lenthe, near Hanover, Germany; the fourth child (of fourteen) of a tenant farmer. He left school without finishing his education, but joined the army to undertake training in engineering. After starting a company (see below), one brother represented him in England (Sir William Siemens) and another in St.Petersburg, Russia (Carl von Siemens), each earning separate recognition in their own right. Following his industrial career, he was ennobled in 1888, becoming Werner von Siemens. He retired from his company in 1890 and died in 1892. Siemens invented a telegraph that used a needle to point to the right letter, instead of using Morse code. Based on this invention, he founded the company Telegraphen-Bauanstalt von Siemens & Halske – later Siemens AG – on October 1, 1847, with the company taking occupation of its workshop on October 12. In 1874 he received a U.S. patent for an electromechanical “dynamic” or moving-coil transducer, which would later be adapted by Alexander Bell for use as a loudspeaker. Siemens name has been adopted as the SI unit of electrical conductance, the siemens.