Granted Patent
Utility
US 4,921,708 · App. 07/317,741
Injection molding nozzle having circumferentially spaced conductive probes
Inventor:
Jobst U. Gellert
Patented Case
View Patent ↗
Granted: May 1, 1990
Filed: Mar 1, 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.