Granted Patent
Utility
US 5,112,561 · App. 07/600,401
Blow-molding methods for fabricating hollow articles from an open-ended tubular body of thermoplastic material
Inventor:
Albert B. Dickinson
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Oct 19, 1990
Inventor
Albert B. Dickinson
Assignee (at issue)
Edward S. Robbins, III
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.