Granted Patent
Utility
US 5,387,099 · App. 08/206,712
Injection molding valve member sealing bushing with a thin collar portion
Inventor:
Jobst U. Gellert
Patented Case
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Granted: Feb 7, 1995
Filed: Mar 7, 1994
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.