Granted Patent
Utility
US 5,421,527 · App. 08/132,844
Apparatus and method of separating asbestos contaminants from soil
Inventor:
Lawrence J. Corte
Patented Case
View Patent ↗
Granted: Jun 6, 1995
Filed: Oct 7, 1993
Inventor
Lawrence J. Corte
Assignee (at issue)
K N Energy, 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.