Books by United States Patent Office
Books8Series0
Standalone books
Classification of Subjects of Invention Adopted in the U.S. Patent Off
Classification of the Subject-matter of Patents Issued
Classified Index of Subjects of Invention Adopted in the U. S. Patent
History of the International Union for the Protection of Industrial Pr
Official Gazette Of The United States Patent Office, Volume 287...
Report of the Commissioner of Patents for the Year 1850; Volume 1850
Report of the Commissioner of Patents for the Year 1857; Volume 1857
Specifications And Drawings Of Patents Relating To Electricity Issued