The title page of "The United States Patent Law" by Munn & Co., New-York, published in 1867, features the title and subtitle "How to Obtain Letters Patent for New Inventions: Including a Variety of Useful Information Concerning the Rules and Practice of the Patent-Office; How to Secure Foreign Patents; Forms for Assignments and Licenses; together with Engravings and Descriptions of the Condensing Steam-En-Gine, and the Principal Mechan- ical Movements, Valuable Tables, Calculations, Problems, etc."