Granted Patent
Utility
US 6,015,025 · App. 09/146,902
Diffuser panel with built-in speaker arrangement and methods of installation
Inventors:
Ralph D. McGrath, Harry Alter
Patented Case
View Patent ↗
Granted: Jan 18, 2000
Filed: Sep 4, 1998
Inventors
Ralph D. McGrath
Harry Alter
Assignee (at issue)
Owens-Corning Fiberglas Technology, 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.