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.
Cecil Howard Green
In 1941, Green and his partners J. Erik Jonsson, Eugene McDermott and H.B. Peacock bought GSI, a geophysical exploration service. The company began to do electronics work during World War II, and in 1951, the company's name changed to Texas Instruments Incorporated (TI), and GSI became a wholly owned subsidiary of TI.