Features
Secondary Battery Sub-Stations
The American Association for the Advancement of Science
Progress of Ocean Steam Navigation
Report on Explosions in the Electric Subways
An Improved Lens
An Improved Piston Rod Packing
An Improved Safety Harness
An Improved Thill Coupling Jack
An Improved Hen Coop
The Scientific Lantern
An Improved Steel Belt Lacing
The White Star Liner Teutonic
An Improved Tile Ditcher
The Electric Rolling Bridges of the Paris Exposition
Departments
- Departments
Business and Personal- August 24, 1889
Notes and Queries- August 24, 1889
Recently Patented Inventions- August 24, 1889
To Inventors- August 24, 1889
Index of Inventions- August 24, 1889
