= Siemens and Halske T52
{wiki=Siemens_and_Halske_T52}
The Siemens and Halske T52 is a historical telecommunications device, specifically a vacuum tube technology-based telephone exchange or switchboard system developed in the early 20th century. Siemens & Halske, a German company founded by Werner von Siemens and Johann Georg Halske in 1847, played a significant role in the development of electrical and telecommunications technology. The T52, introduced in the early 1950s, was designed to facilitate telephone calls by connecting individual lines to one another.
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