Litton Industries
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Litton Industries was a large defense contractor in the United States. It was bought by the Northrop Grumman in 2001.
Litton started (in 1953) as an electronics company building navigation, communications and electronic warfare equipment. They diversified and became a much bigger business with major shipyards, etc, even manufacturing microwave ovens.
Adler was an office machines subsidiary acquired in 1969.
External reference
Northrop Grumman Website (http://www.northropgrumman.com)