Granted Patent
Utility
US 4,589,666 · App. 06/758,713
Slip joint assembly for a split ring seal
Inventor:
Horace P. Halling
Patented Case
View Patent ↗
Granted: May 20, 1986
Filed: Jul 25, 1985
Inventor
Horace P. Halling
Assignee (at issue)
Pressure Science Incorporated
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.