Mirsoyibov ravshanbek student: mirsoyibov. R teacher: toshmatova: M

During the next period of his life, Edison became involved in multiple projects and partnerships dealing with the telegraph. In October 1869, Edison formed with Franklin L. Pope and James Ashley the organization Pope, Edison and Co. They advertised themselves as electrical engineers and constructors of electrical devices. Edison received several patents for improvements to the telegraph. The partnership merged with the Gold and Stock Telegraph Co. in 1870. Edison also established the Newark Telegraph Works in Newark, NJ, with William Unger to manufacture stock printers. He formed the American Telegraph Works to work on developing an automatic telegraph later in the year. In 1874 he began to work on a multiplex telegraphic system for Western Union, ultimately developing a quadruplex telegraph, which could send two messages simultaneously in both directions. When Edison sold his patent rights to the quadruplex to the rival Atlantic & Pacific Telegraph Co., a series of court battles followed in which Western Union won. Besides other telegraph inventions, he also developed an electric pen in 1875.

• During the next period of his life, Edison became involved in multiple projects and partnerships dealing with the telegraph. In October 1869, Edison formed with Franklin L. Pope and James Ashley the organization Pope, Edison and Co. They advertised themselves as electrical engineers and constructors of electrical devices. Edison received several patents for improvements to the telegraph. The partnership merged with the Gold and Stock Telegraph Co. in 1870. Edison also established the Newark Telegraph Works in Newark, NJ, with William Unger to manufacture stock printers. He formed the American Telegraph Works to work on developing an automatic telegraph later in the year. In 1874 he began to work on a multiplex telegraphic system for Western Union, ultimately developing a quadruplex telegraph, which could send two messages simultaneously in both directions. When Edison sold his patent rights to the quadruplex to the rival Atlantic & Pacific Telegraph Co., a series of court battles followed in which Western Union won. Besides other telegraph inventions, he also developed an electric pen in 1875.