Granted Patent
Utility
US 6,009,047 · App. 09/127,199
Sound generation device
Inventor:
James E. Barger
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Jul 31, 1998
Inventor
James E. Barger
Assignee (at issue)
GTE Internetworking Incorporated
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.