Granted Patent
Utility
US 4,923,723 · App. 07/265,775
Multi-layer preform, method of forming preform, and container formed from the preform
Inventors:
Wayne N. Collette, Suppayan M. Krishnakumar, Thomas E. Nahill
Patented Case
View Patent ↗
Granted: May 8, 1990
Filed: Nov 1, 1988
Inventors
Wayne N. Collette
Suppayan M. Krishnakumar
Thomas E. Nahill
Assignee (at issue)
Continental PET Technologies, 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.