Dec 31, 2015
Typewriter
Cash Register
Adding Machine
Sewing Machine
Tin Can Can Opener
Condensed Milk
Breakfast Cereals
Refrigeration
Mechanical Reaper
Steel Plow
Tractor
Electric Dynamo
Telegraph
First Telephone Early Telephone
Electric light
Electric Delivery System
First Four-Wheeled Auto Model T Ford
Assembly Line
Airplane