Granted Patent
Utility
US 5,927,525 · App. 08/847,868
Multi-layer containers and preforms
Inventors:
Richard C. Darr, Michael C. Kitzmiller
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Apr 28, 1997
Inventors
Richard C. Darr
Michael C. Kitzmiller
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.