Assessing the Role of the Federal Government in the Development of New Products, Industries, and Companies examines the role of the federal government in the development of major innovations. This is done in a purely descriptive manner, specifically identifying and describing major products, industries, and firms resulting from U.S. government funding of research in the years since World War II (WWII). It is well known that during WWII and the famous 'Manhattan Project,' the Los Alamos and Oak Ridge National Laboratories played a key role in the development of the atom bomb and nuclear energy. What is less well known is the role of the federal and national labs in the development of such key technologies as radar, lithium-ion batteries, and computers. The evidence clearly shows that these investments in military and space R&D ultimately had numerous significant commercial applications. This monograph is organized as follows. First, it outlines a strategy for identifying major products, industries, and companies resulting from government funding in the years since WWII, requiring the authors to define the concept of a general purpose technology (GPT). They conclude with a description of 40 innovations that have had a major impact on our economy and society. The description of these innovations contains fairly-detailed explanations of how these products were developed and how they made their way from lab to market. The outcomes of these federal investments in technology are quite impressive, both in terms of their economic and social impacts.