Granted Patent
Utility
US 4,742,606 · App. 06/899,436
Universal cartridge trimming device
Inventors:
Owen Burby, Richard Hugo Clark
Patented Case
View Patent ↗
Granted: May 10, 1988
Filed: Aug 22, 1986
Inventors
Owen Burby
Richard Hugo Clark
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.