Excerpt from A Treatise Law of Patents: For Useful Inventions, as Enacted and Administered in the United States of America The first edition of this work, published in 1849, has been the foundation of all the succeeding ones. The sec ond was published in 1854; the third, in 1867. The present edition is believed to contain references to most of the important decisions in England and in this country that have appeared since the edition of 1867. In preparing it for the press, I have been ably assisted by Mr. E. S. Drone, Of the New York Bar, whose abstracts of the recent de cisions and of the statute of 1870 have been made and adapted to my text, with clearness and precision. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.