90 Improved Hinge. Improved Dog for Circular Saw Mill. Improved Medical Compound. Improved Thrashing Machine. Improved Till Alarm. Improved Railway Frog. Improved Harvester. Improved Beat Chopper. Improved Clay Molding Machine. end. Improved Curtain Fixture. Improved Toy. Improved Button Hole Cutter. Improved Shutter Worker. Improved Ant Trap. Improved Fruit Jar. Improved Egg Beater. Improved Churn Power. alue of Patents How Can I Best Secure My Invention improvement as possible and Send by mall. An answer as to the prospect Preliminary Examination. Rejected Cases. To Make an Application for a Patent. Caveats. Reissues. Design Patents. Foreign Patents. Value of Extended Patents. Trademarks. Canadian Patents. Copies of Patents. MITNN & 37 Park Row New York. °MCAIl WASIIINGTON—Corner F and .7th streets opposite Patentdifice., scientific american, 1873-08-11
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