Sperry Rand Corporation
Remington Rand, the producers of UNIVAC machines, got their start by buying the Eckert Mauchly Computer Corporation in 1950 and, shortly after, the ERA firm.
These were the foundation of the Univac Division that produced some of the earliest commercially available machines ahead of more famous firms such as IBM. The large management structure of the company often frustrated their engineers, many of whom left to found very influential computer firms (e.g. Control Data Corporation). This bureaucracy is thought by many (including their Vice President, J. Pres Eckert) to have eventually limited their ability to take advantage of rapidly changing technology and to give the lead to others such as IBM.
In 1955 the Sperry Corporation and Remington Rand merged forming Sperry Rand. Sperry Rand eventually merged with Burroughs to form Unisys and is still in business.