Granted Patent
Utility
US 6,722,072 · App. 10/152,557
Trigger group module for firearms and method for installing a trigger group in a firearm
Inventor:
Michael L. McCormick
Patented Case
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Granted: Apr 20, 2004
Filed: May 21, 2002
Inventor
Michael L. McCormick
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.