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Martin Marietta – MM

  • Type: Commercial
  • Abbreviation: MM
  • Founded: 1961
  • Country: USA

The Martin Marietta Corporation was an American company founded in 1961 through the merger of Glenn L. Martin Company and American-Marietta Corporation. The combined company became a leader in chemicals, aerospace, and electronics. In 1995, it merged with Lockheed Corporation to form Lockheed Martin.

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