Inventions and Their Management is a science book by Alf K. Berle and L. Sprague de Camp. It was based on A Course on Inventing and Patenting by Howard Wilcox and Alf K. Berle, a series of nine papers presented by New York University in cooperation with Inventors Foundation, Inc., issued from 1933-1934. The Berle/de Camp version was published by the International Textbook Company in July 1937. It was reprinted, revised, in September 1940. A second edition was issued by the same publisher in April 1947 and was reprinted, revised, in January 1948, with a third printing in June 1948 and a fourth in June 1950. A third edition was issued by the same publisher in November 1951 and was reprinted, revised, in 1954. An additional printing was issued by Laurel Publishing in 1957. The work was revised and reissued under the new title Inventions, Patents, and Their Management by Van Nostrand in 1959. It was reprinted by Litton Educational publishers in 1968. The work has been translated into Japanese. Source: Wikipedia (en)