1856 - Joshua Hendy Iron Works1890 - Newport News Shipbuilding & Drydock Co. 1917 - Lewis & Vought Corp.1918 - Navia Aviation1926 - Thompson Products Inc.1929/1950/1990 - Thiokol Corp.1929/1973 - Grumman Aircraft Engineering Corp. 1934/1939/1960 - Ryan Aeronautical Co. 1938/1960 - Westinghouse Electric Corp. Radio Division1938 - Ingalls Shipbuilding Corp.1939 - Radioplane Co. Northrop Aircraft, Inc.

1943 - Norden Laboratories Corp. 1952 - Radioplane Co. 1953 - Litton Industries Inc. Ramo-Wooldridge Corp.1956 - Aerojet General Corp. Electronics & Information System Group Sperry Piedmont Co.1957 - Space Technology Laboratories1958/1965/2001 - Thompson Ramo Wooldridge Inc.1958 - Astro Aerospace Corp.1960 - Northrop Aircraft, Inc.1961 - Logicon Corp.1964 - American Aviation Corp.

1968 - California Microwave Systems1969 - Essex Corp. Federal Data Corp. Teledyne Ryan Aeronautical Corp.1972 - Xetron Corp.1976 - AOA Xinetics1979 - XonTech1981 - Sterling Software Inc.1982 - Comptek Research Inc. Scaled Composites LLC Orbital Sciences Corp.1988 - Illgen Simulation Technologies, Inc.

1990 - Integic Corp. Alliant Techsystems Inc.1992 - Cutting Edge Optronics1993 - Fibersense Technology Corp.1994 - Northrop Grumman Corp.1996 - Sperry Marine1999 - Qantas Defence Services Pty Ltd2000 - Sonoma Photonics Inc.2001 - Thiokol Propulsion2005 - M5 Network Security Pty Ltd2015 - Orbital ATK Inc. 2020 - Northrop Grumman Corp.

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2020

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