Subject-matter index of patents for inventions issued by the United States Patent office from 1790 to 1873, inclusive...Vol 2 Autor Us Patent Office 15 sep 2011 Paperback Preț: 237.80 lei 3-5 săpt.
Subject-matter index of patents for inventions issued by the United States Patent office from 1790 to 1873, inclusive...Vol 3 Autor Us Patent Office 15 sep 2011 Paperback Preț: 340.78 lei 3-5 săpt.