by Steve Reiss (firstname.lastname@example.org)
From E. Burke Inlow's 1948 "The Patent Grant" (page 82-83):
The year 1858, brought the question of the patent grant to the eve of the great Civil War. That war marked the end of an era of patent development. Henceforth, in contrast to the desultory progress made in the early courts, the investment of the patent property was to drive forward with the greatest possible speed. The formative years were over. In the burgeoning greatness of American capitalism, the years beyond the Civil War were to bring the patent grant to it's highest substantive value.