Granted Patent
Utility
US 6,588,578 · App. 10/079,296
Conveyor guiderail snag resistant opening
Inventor:
Ronald L. Ernst
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Feb 20, 2002
Inventor
Ronald L. Ernst
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.