Granted Patent
Utility
US 5,238,390 · App. 07/841,521
Blow-molding apparatus for fabricating hollow articles from an open-ended tubular body of thermoplastic material
Inventor:
Albert B. Dickinson
Patented Case
View Patent ↗
Granted: Aug 24, 1993
Filed: Feb 26, 1992
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.