This rectifier allowed radios to draw power from standard light or wall sockets. In August 1925, Philadelphia Storage Battery introduced its "Socket Power Battery Eliminator" developed by James M. continued to grow, moving several times to new facilities. ![]() The name Philco first appeared as a trademark in 1919. Philadelphia Storage Battery supplied storage batteries to the automobile industry and early radio enthusiasts. Helios became the Philadelphia Storage Battery Company in 1906. In 1899, the Helios assets were sold to the Helios-Upton Company of New Jersey. ![]() When the market for carbon-arc lamps declined after Helios began, the company experienced financial difficulties and closed in 1893. When Marr became president, the name was changed to the Helios Electric Company. Thomas Spencer, Frank Marr, and three other Philadelphia businessmen founded the Spencer Company in 1892 as a carbon-arc lamp producer.
0 Comments
Leave a Reply. |