 This brought about three interferences filed in the US Patent Office between their application and one by Arthur Dickinson of IBM.Eventually these were settled in favor of Desch, in part because he proved Dickinson's design unworkable, and gave Desch and Mumma the first patent on the modern digital computer.His career after this point was noteworthy, and he was especially proud in later years of his work with Bob Mumma in the development of the NCR 304, the first completely solid state computer.