Granted Patent
Utility
US 4,986,335 · App. 07/522,794
Dies for horizontal-vertical die casting machines
Inventor:
Byron W. Koch
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: May 14, 1990
Inventor
Byron W. Koch
Assignee (at issue)
Farley, Inc.
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.