Granted Patent
Utility
US 5,494,192 · App. 08/292,518
Stress concentrator aperture-forming means for sealed containers and packages
Inventor:
Sanford Redmond
Patented Case
View Patent ↗
Granted: Feb 27, 1996
Filed: Aug 18, 1994
Inventor
Sanford Redmond
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.