Granted Patent
Utility
US 6,319,574 · App. 09/499,968
Multi-layer plastic preform for blow molding
Inventor:
William A. Slat
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: Feb 8, 2000
Inventor
William A. Slat
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.