Granted Patent
Utility
US 5,863,047 · App. 08/787,277
Mechanical seal assembly
Inventor:
Peterjon Ellis
Patented Case
View Patent ↗
Granted: Jan 26, 1999
Filed: Jan 24, 1997
Inventor
Peterjon Ellis
Assignee (at issue)
Utex Industries Inc.
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.