by Paul Moxon
There are 40 known U.S. patents related to Vandercook presses. Most are assigned to Messrs. Vandercook, but a few are in the names of key engineering employees. Several patents are cited in other U.S. and foreign patents, including recent ones issued for offset equipment; materials tested on Vandercook presses; and mechanisms used in other industries. Links in the patent number column redirect to Google Patents containing scans of original U.S. patents. Please note that in several instances the title listed is non-descriptive (e.g. PROOF PRESS) and/or shows typographic errors (e.g. PSOOSI PBINTISTG-PKESS) generated by an optical character recognition program. See also Hacker and Challenge patents. Thanks to Daniel Morris for telling me about this resource.