COMMUNICATIONS RECEIVED. Index of Inventions FOR WHICH WERE GRANTED FOR THE WEEK ENDING November 1873 SCHEDULE OF PATENT FEES. $50 $15 $30 And How to Obtain Them. HOW T OBTAIN ATENJ How Can I Best Secure My Invention? Preliminary Examination. To Make an Application for a Patent. Foreign Patents. Caveats., scientific american, 1873-12-13

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COMMUNICATIONS RECEIVED. Index of Inventions FOR WHICH WERE GRANTED FOR THE WEEK ENDING November 1873 SCHEDULE OF PATENT FEES. $50 $15 $30 And How to Obtain Them. HOW T OBTAIN ATENJ How Can I Best Secure My Invention? Preliminary Examination. To Make an Application for a Patent. Foreign Patents. Caveats., scientific american, 1873-12-13

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