Granted Patent
Utility
US 5,645,862 · App. 08/533,805
Apparatus for the thermal densification of thermoplastic articles
Inventors:
Lewis E. Sable, Richard A. Wenzel
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Sep 26, 1995
Inventors
Lewis E. Sable
Richard A. Wenzel
Assignee (at issue)
Tenneco Plastics Company
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.