Almon Brown Strowger, American telecommunications inventor, c 1885.
© Science Museum / Science & Society Picture Library
Almon Brown Strowger (1839-1902) was a teacher and soldier who developed the first succesful automatic telephone-switching system. Strowger then established the Strowger Automatic Exchange Company in 1891, the first exchange being installed the following year. The company became part of General Telephones and Electronics.