The collection consists of copies of trial records collected by Seymour C. Yuter (dates unknown), a patent attorney for Technitrol, Inc. They include documents from the interlocking suits of Technitrol v. Control Data Corp., Technitrol v. Sperry Rand, and Technitrol v. U.S.A., which came to trial between the late 1950s and the mid 1970s. The principal point at issue was, who was the inventor of the magnetic storage drum. The records provide a fascinating picture of the early history of the computer industry and trace the role played by the military in the years immediately after World War II.