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Over the years a number of patents for processing industrial hemp have been designed.  

This is a collection of some of the patents done since 1906.  1941 1949 1956 

HempPatent1906

HempPatent19191919 Schlichten Patent. This was one of the few decorticators to make it to commercial use.

 

HempPatent1941

HempPatent1949

HempPatent1956

HempPatent1956 2

 

 Hemp Patent 1956 PlanetaryDecorticatorPlanetary Design

HammerMill Hammer Mill Design

TCIpatent 1D-8 Decorticator Patent 2006