Granted Patent
Utility
US 4,941,249 · App. 07/446,183
Method of making an injection molding nozzle having nose portion with heating element encircling the bore
Inventor:
Jobst U. Gellert
Patented Case
View Patent ↗
Granted: Jul 17, 1990
Filed: Dec 5, 1989
Inventor
Jobst U. Gellert
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.