Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-59.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced

Excerpt from The Journal of the Franklin Institute, Vol. 167: Devoted to Science and the Mechanic Arts; January-June, 1909 Continental United States has been bu