Granted Patent
Utility
US 6,264,835 · App. 09/303,416
Apparatus for separating a light from a heavy fluid
Inventor:
Thomas E. Pank
Patented Case
View Patent ↗
Granted: Jul 24, 2001
Filed: May 3, 1999
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.