Granted Patent
Utility
US 5,746,911 · App. 08/782,373
Apparatus for separating a light from a heavy fluid
Inventor:
Thomas E. Pank
Patented Case
View Patent ↗
Granted: May 5, 1998
Filed: Jan 13, 1997
Inventor
Thomas E. Pank
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.