Texas Instruments
In 1930, J. Clarence Karcher and Eugene McDermott founded Geophysical Service, an early provider of seismic exploration services to the petroleum industry. In 1939, the company reorganized as Coronado Corp., an oil company with Geophysical Service Inc (GSI), now as a subsidiary. On December 6, 1941, McDermott along with three other GSI employees, J. Erik Jonsson, Cecil H. Green, and H.B. Peacock purchased GSI. During World War II, GSI expanded their services to include electronics for the U.S. Army, Signal Corps, and the U.S. Navy. In 1951, the company changed its name to Texas Instruments, with GSI becoming a wholly owned subsidiary of the new company.
Patrick E. Haggerty
In November, 1945 Haggerty joined Geophysical Service Incorporated (GSI) in Dallas as general manager of the newly formed Laboratory and Manufacturing Division, with responsibility for developing the research, engineering, and manufacturing phases of the company's operations. In December 1951 GSI became Texas Instruments Incorporated. In 1951 Haggerty became executive vice president and director, in 1958 president, and in 1966 chairman, a post he held until retiring.