About this time an anti-trust law was passed and the watch case manufacturers formed a boycott against Dueber's company.
In 1888, Dueber bought Hampden and moved both companies to a dual set of factory buildings in Canton, Ohio.
[citation needed] By 1890, the company was producing quality watches, and introduced the first size 16, 23 jewel movement made in America.
In 1930, Amtorg Trading Corporation purchased the Dueber-Hampden Watch Company together with all of the manufacturing equipment, parts on hand, and work in progress, in order to build a factory in Russia.
The Hampden pattern watch movements were called the Type-1, easily recognized by its distinct twin finger bridge layout.