Granted Patent
Utility
US 6,188,198 · App. 09/377,370
Aperture closures
Inventor:
Bruce Stanley Gunton
Patented Case
View Patent ↗
Granted: Feb 13, 2001
Filed: Aug 18, 1999
Inventor
Bruce Stanley Gunton
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.