Caveats, Trade Marks Copyrights. CAN I OBTAIN A PATENT ? For a prompt answer and an honest opinion, write to IUNN CO., whohave had nearly fifty years' experience in the patent business. Communica tions strictly confidential. A Handbook of In formation concerning Patents and how to ob tain them sent free. Also a catalogue of mechan ical and scientific hooks sent free. Patents taken through Munn Co. receive special nouceinthe Scientific American, and thus are brought widely before the public with out cost to the inventor. This splendid paper, issued weekly, elegantly il lustrate d.has by far the largest circulation of any scientific work in the world. J3 a year. Specimen copies sent free. Building Edition monthly, 2.50 a year. Single copies, 35 cents. Every number contains beau tiful plates, in colors, and photographs of new houses, with plans, enabling builders to show the latest designs and secure contracts. Address MUNN CO., New Yore, 361 Broadway.
This article was originally published with the title "Patents" in SA Supplements 36, 936supp, 384 (December 1893)