Granted Patent
Utility
US 6,563,932 · App. 09/847,692
Magnet system for loudspeakers
Inventor:
Paul Cork
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: May 2, 2001
Inventor
Paul Cork
Assignee (at issue)
KH-TECH CO., 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.