Granted Patent
Utility
US 5,463,164 · App. 08/216,002
Waste disposal in subterranean earth formations
Inventor:
Thomas K. Perkins
Patented Case
View Patent ↗
Granted: Oct 31, 1995
Filed: Mar 22, 1994
Inventor
Thomas K. Perkins
Assignee (at issue)
Atlantic Richfield Company
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.