Features
"United States Patent Laws"
Bishop Potter on Labor and Machinery
An Advance in the Electrical Equipment of Steam Railroads
The Berliner Telephone Transmitter Patent Sustained
A Convenient Window Desk
An Efficient Latch for Heavy Doors
A Simple Bicycle Holder
A Novel Music Leaf Turner
A Shorthand Typewriter
The Leak in the New Dry Dock, Brooklyn Navy Yard
The Torpedo Boat Porter
Harvard Observatory in Peru
The Columbia Motor Carriage
An Arc Lamp that Operates in Any Position
Departments
- Recommended
New Books, Etc. - May 22, 1897
- Departments
Index of Inventions - May 22, 1897
Notes and Queries - May 22, 1897
Recently Patented Inventions - May 22, 1897
Business and Personal - May 22, 1897
Patents - May 22, 1897
