Granted Patent
Utility
US 5,915,647 · App. 08/907,541
One-piece core plug
Inventor:
Michael Van Deurse
Patented Case
View Patent ↗
Granted: Jun 29, 1999
Filed: Aug 8, 1997
Inventor
Michael Van Deurse
Assignee (at issue)
DOUBLE E COMPANY
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.