Granted Patent
Utility
US 4,746,686 · App. 07/039,287
Visible light activated cavity liner
Inventor:
Duncan E. Waller
Patented Case
View Patent ↗
Granted: May 24, 1988
Filed: Apr 17, 1987
Inventor
Duncan E. Waller
Assignee (at issue)
Kerr Manufacturing Company
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.