Granted Patent
Utility
US 4,594,938 · App. 06/634,717
Pressure relieved piston rod seal
Inventor:
Daniel B. Shore
Patented Case
View Patent ↗
Granted: Jun 17, 1986
Filed: Jul 26, 1984
Inventor
Daniel B. Shore
Assignee (at issue)
J. I. Case 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.