THE MECHANICAL APPLIANCES OF THE CHEMICAL AND METALLURGICAL INDUS Legal Notices PATENTS INVENTORS are invited to comMunicate with Munn & Co. 361 Broadway New York. or 625 F Street Washington D. C. in regard to securing valid patent protection for their in Office and the Courts. and we have special faclli ties for handling Infringement and other suits in Federal and State jurisdictions. bility of an invention will be readily given to any inventor furnishing us with a model or sketch and a brief description Of the device in question. All communications are strictly confidential. Our Hand-Book on Patents will be sent free on request. Every patent secured through us receives special notice in the Scientific American. It was established over sixty Years ago. MUNN & CO. 361 Broadway New York INDEX OF INVENTIONS For which Letters Patent of the United States were issued for the Week Ending March 2 1909 AND EACH BEARING THAT DATE, 909-03-13
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