TRADE MARKS REGISTERED. SCHEDULE OF PATENT FEES: APPLICATIONS FOR EXTENSIONS. VALUE OF PATENTS And How to Obtain Them. OBTAIN Row Can I Best Secure My Invention? Preliminary Examination. To Make an Application for a Patent. Foreign Patents. Index of Inventions Rejected Cases. Reissues. Caveats. Canadian Patents. Value of Extended Patents. Trademarks. Design Patents. Copies of Patents. EXTENSIONS GRANTED. DESIGNS PATENTED., scientific american, 1873-10-25
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