MESSRS. Munn & CO., Solicitors of Patents. bave bad nearly fifty years' continuous experience, Any one may quickly ascertain, free, whether an invention probably i8 pat en table by writing to Munn & Co. Communications strictly confidential. A handbook of patents and bow to obtain tbem sent free. taken through Munn & Co. receive special notice in the Scientific American. This splendid weekly paper, elegantly illustrated, has the largest circulation of any scientific work. $3 a year. Specimen copies free. Address MUNN & CO., New York, 361 Broadway.
This article was originally published with the title "Patents" in Scientific American 73, 26, 415 (December 1895)