Granted Patent
Utility
US 4,861,414 · App. 07/254,992
Easy-open flexible pouch and apparatus and method for making same
Inventor:
Dennis J. Vogan
Patented Case
View Patent ↗
Granted: Aug 29, 1989
Filed: Oct 7, 1988
Inventor
Dennis J. Vogan
Assignee (at issue)
W. R. Grace & Co.
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.