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Improved Rudder

Miscellaneous Summary

Charming by Serpents

Engraving for Calico Printing

Polytechnic Association of the American Institute

Staub's Improved Chuck Jaw

The November Meteors

Patent Office Decision--Cartridges

Extension Notices

Corbin's Patent Bag Holder

Nitro-Glycerin as a Substitute for Gun-Powder

Heald's Float Valve

Transportation of Fresh Meats to Market

Ventilation--Its Necessity and Neglect

Patent Claims


  • Departments


  • New Inventions

  • Notes and Queries

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