Granted Patent
Utility
US 5,082,568 · App. 07/655,118
Method for removing low concentrations of metal contaminants from water
Inventor:
Thomas Holler
Patented Case
View Patent ↗
Granted: Jan 21, 1992
Filed: Feb 14, 1991
Inventor
Thomas Holler
Assignee (at issue)
Ametek, 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.