Granted Patent
Utility
US 5,149,485 · App. 07/739,989
Method and apparatus for extrusion blow molding polyethylene terephthalate articles
Inventor:
Samuel L. Belcher
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Aug 2, 1991
Inventor
Samuel L. Belcher
Assignee (at issue)
Sabel Plastechs 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.