Features
The Decision in the Bell-Drawbaugh Telephone Suit
The Delay of Business in the Patent Office
Automatic Alarm for Bearings
Automatic Game Counter
A Novel Table
Casing for Pipes
Frankel's Registering Dynamometer
Double Steam Hammer
The New Orleans Exposition
A New Gas Engine
Improved Silo Press
The Camel Corps of the British Army
Recent Decisions Relating to Patents - December 20, 1884
An Improved Speed Indicator
Engineering Inventions - December 20, 1884
Miscellaneous Inventions - December 20, 1884
Special - December 20, 1884
Agricultural Inventions - December 20, 1884
Foreign Patents - December 20, 1884
Their Cost Reduced
Departments
- Letters
Correspondence - December 20, 1884
- Departments
Business and Personal - December 20, 1884
Notes and Queries - December 20, 1884
Index of Inventions - December 20, 1884
