Granted Patent
Utility
US 4,567,987 · App. 06/644,364
Easy opening pinch bottom bag
Inventors:
J. George Lepisto, Paul O. Hain
Patented Case
View Patent ↗
Granted: Feb 4, 1986
Filed: Aug 27, 1984
Inventors
J. George Lepisto
Paul O. Hain
Assignee (at issue)
Champion International Corporation Limited
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.