Granted Patent
Utility
US 6,118,884 · App. 08/964,095
Audio voice coil adaptor ring
Inventor:
Lucio Proni
Patented Case
View Patent ↗
Granted: Sep 12, 2000
Filed: Nov 4, 1997
Inventor
Lucio Proni
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.