Granted Patent
Utility
US 6,200,482 · App. 09/407,708
Arsenic filtering media
Inventors:
Eric L. Winchester, Ronald C Berry, SR., Michael J. McMullin
Patented Case
View Patent ↗
Granted: Mar 13, 2001
Filed: Sep 28, 1999
Inventors
Eric L. Winchester
Ronald C Berry, SR.
Michael J. McMullin
Assignee (at issue)
ADI International 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.