Features
Electricity at the Great Exposition
The New U. S. Army Magazine Rifle
Notes from the Worlds Columbian Exposition Chicago 1893
Improved Triple Effect Evaporator
The Krupp Exhibits
Protecting Iron Work in Buildings from Fire
An Improved Dumbwaiter
An Improved Suction Valve
An Improved Boiler Furnace
An Improved Car Coupling
The Racquet and Tennis Club of New York
The Steam Man
The First War Steamer of the World
To Inventors - April 15, 1893
Departments
- Letters
Correspondence - April 15, 1893
- Departments
Recently Patented Inventions - April 15, 1893
New Books and Publications - April 15, 1893
Business and Personal - April 15, 1893
Notes and Queries - April 15, 1893
Index of Inventions - April 15, 1893
Patents! - April 15, 1893
