Rocketdyne
The Rocketdyne Division was founded by North American Aviation (NAA) in 1955, and was later part of Rockwell International (1967-1996) and Boeing (1996-2005). In 2005, the Rocketdyne Division was sold to United Technologies Corporation, becoming Pratt & Whitney Rocketdyne as part of Pratt & Whitney. In 2013, Pratt & Whitney Rocketdyne was sold to GenCorp, which merged it with Aerojet to form Aerojet Rocketdyne.
Teledyne e2v
The company began in the early 1940s as a part of the Marconi group, manufacturing magnetrons for defence radar systems. The company was first registered as a separate company in Chelmsford, Essex in 1947 under Semyon Aisenstein. Its initial name was the Phoenix Dynamo Co Ltd, though it immediately changed its name to English Electric Valve Company Ltd. In 1959 Bob Coulson established traveling-wave tube and microwave tube sections and they were producing ceramic hydrogen thyratrons as well. By this time EEV was the largest hi-tech manufacturing company in the UK. A year later they won an EMMY award for outstanding contribution to electronics technology in developing the 4½" orthicon tube. In 1961 they acquired the Associated Electrical Industries valve business based in Lincoln. Sir Charles Oatley was a director of the company from 1966 to 1985. In 1962, EEV opened its first office in America in Buffalo, NY. The company has received 13 Queen's Awards for Technology in its history, most recently in 2006 for low-light imaging devices and in 2004 for thyratrons for cancer radiotherapy treatment. Also, in 1972, they opened an office in Paris, France and in 1977 they opened another office in NY but this time in Elmsford. Keith Attwood, e2v's CEO from 1999 to 2013 led e2v through a short period as Marconi Applied Technologies, and then in 2002 he led a management buy out supported by 3i following the collapse of the Marconi group. Following further growth under 3i, in 2004 the company floated on the London Stock Exchange.