Classification of United States patents on electrotyping
By: by C.L. Buck, associate chemist. Based on survey made by the Division of tests and technical control of the United States Government printing office, M.S. Kantrowitz, technical director
Series: U.S. Government printing office. Technical bulletin -- no. 19
Publisher: [U.S. Govt. print. off.]
Published: 1934
Place of publication: Washington
Language: eng
Number of pages: 41
Subjects: Patents; Electrotyping
Notes: At head of title: United States Government printing office. Geroge H. Carter, public printer ...