Journal of the Franklin Institute, Volumes 245-246![]() Elsevier, 1948 Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-59. |
Journal of the Franklin Institute, Volumes 245-246![]() Elsevier, 1948 Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-59. |