Granted Patent
Utility
US 5,883,804 · App. 08/687,804
Modular digital audio system having individualized functional modules
Inventor:
Steven G. Christensen
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Jul 19, 1996
Inventor
Steven G. Christensen
Assignee (at issue)
Telex Communications, 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.