Granted Patent
Utility
US 5,658,094 · App. 08/583,434
Energy recuperative soil remediation system
Inventor:
Lawrence G. Clawson
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Jan 5, 1996
Inventor
Lawrence G. Clawson
Assignee (at issue)
Cedarapids, Inc.
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.