APPLICATIONS FOR EXTENSION OF PATENTS. Value of Extended Patents. MUNN & CO. 37 Park Row. NEW BOOKS AND PUBLICATIONS. GREAT VALUE MUNN & CO. Publishers of the more than 50000 INVENTIONS 25.000 APPLICATIONS MUNN & CO Specifications and Drawings for Patents Caveats Re issues Designs Trade Marks Extensions Interferences and Assignments. They also prosecute FOREIGN PATENTS REISSUES INTERFERENCES HINTS ON SELLING PATENTS PATENT OFFICE THE PATENT LAWS FEES ETC. SEE MUNN & SCIENTIFIC AMERICAN, 1871-04-15
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