APPLICATIONS FOR EXTENSION OF PATENTS. Value of Extended Patents. MUNN & CO. 37 Park Row Inventions Patented in England by Americans. Foreign Patents. Caveats. Trademarks. Design Patents. Rejected Cases. European Patents. How Can I Best Secure My Invention To Make an Application for a Patent. How Can I Obtain a Patent ? Preliminary Examination. MUNN & CO., scientific american, 1871-12-02

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