Granted Patent
Utility
US 5,466,418 · App. 08/091,339
System for the remediation of highly contaminated soils
Inventors:
Malcolm L. Swanson, Wendell Feltman, Robert E. Schreter
Patented Case
View Patent ↗
Granted: Nov 14, 1995
Filed: Jul 13, 1993
Inventors
Malcolm L. Swanson
Wendell Feltman
Robert E. Schreter
Assignee (at issue)
Astec Industries, 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.