Granted Patent
Utility
US 6,715,644 · App. 10/037,295
Flexible plastic container
Inventor:
Michael Wilford
Patented Case
View Patent ↗
Granted: Apr 6, 2004
Filed: Dec 21, 2001
Inventor
Michael Wilford
Assignee (at issue)
David S. Smith Packaging 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.