Granted Patent
Utility
US 5,206,040 · App. 07/835,501
Injection molding sealing collar with a central hot tip shaft
Inventor:
Jobst U. Gellert
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: Feb 14, 1992
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.