Granted Patent
Utility
US 5,208,049 · App. 07/820,241
Carriage-mounted extruder and blow molding head
Inventors:
David Leroy HATFIELD, Richard Frazier
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Jan 14, 1992
Inventors
David Leroy HATFIELD
Richard Frazier
Assignee (at issue)
Cincinnatti Milacron 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.