EXHIBIT 4.2 AMENDMENT dated as of July 10, 1997, to the Rights Agreement dated as of March 15, 1995 (the "Rights Agreement"), between READING & BATES CORPORATION (the "Company") and AMERICAN STOCK TRANSFER & TRUST COMPANY, as Rights Agent (the "Rights...Rights Agreement • August 7th, 1997 • Reading & Bates Corp • Drilling oil & gas wells • Delaware
