Granted Patent
Utility
US 6,203,870 · App. 09/028,840
Liner and preform
Inventor:
Richard C. Darr
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Feb 24, 1998
Inventor
Richard C. Darr
Assignee (at issue)
Plastipak Packaging, Inc.
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.