144. Garfield, Eugene. “U.S. Patent #3,346,692 – Copying Apparatus Having a Hand-held Scanner Synchronized to the Recording Unit – October 10, 1967”. Co-inventor: Lawrence Lutzker, Filed 1966 March 21, 1967

144. Garfield, Eugene. “U.S. Patent #3,346,692 – Copying Apparatus Having a Hand-held Scanner Synchronized to the Recording Unit – October 10, 1967”. Co-inventor: Lawrence Lutzker, Filed 1966 March 21, 1967, Box: 91, Folder: 50. Eugene Garfield Papers, 2009-036. Science History Institute Archives. https://sciencehistory.libraryhost.com/repositories/3/archival_objects/20923 Accessed October 18, 2024.