Granted Patent
Utility
US 5,402,857 · App. 08/197,727
Oil and gas well cuttings disposal system
Inventor:
Gary H. Dietzen
Patented Case
View Patent ↗
Granted: Apr 4, 1995
Filed: Feb 17, 1994
Inventor
Gary H. Dietzen
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.