H 40 years' experience and have made over ? 100,000 applications for American and For-* eign patents. Send for Handbook. Correspondence strictly confidential. TRADE MARKS. In case yOl!T mark is not registered in the Patent Office, apply to MUKN Co., and proeure Immediate protection. Send for Handbook. COPYRIGHTS for books. cbarts, mam tte., quickly procured. Address MUNN CO., Patent Solicitor.. GKNKKAL OFFICE: SSI BUOADWAY. N. T
This article was originally published with the title "Patents" in SA Supplements 29, 731supp, 14-16 (January 1890)
doi:10.1038/scientificamerican01041890-11686csupp