Granted Patent
Utility
US 5,586,596 · App. 08/312,308
Die cast vent block
Inventor:
Lewis G. Freeman
Patented Case
View Patent ↗
Granted: Dec 24, 1996
Filed: Sep 26, 1994
Inventor
Lewis G. Freeman
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.