Granted Patent
Utility
US 5,428,708 · App. 07/848,035
Musical entertainment system
Inventors:
Brian C. Gibson, John P. Bertsch
Patented Case
View Patent ↗
Granted: Jun 27, 1995
Filed: Mar 9, 1992
Inventors
Brian C. Gibson
John P. Bertsch
Assignee (at issue)
IVL Technologies Ltd.
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.