Granted Patent
Utility
US 5,311,796 · App. 07/557,166
Hydraulic tool
Inventor:
John K. Junkers
Patented Case
View Patent ↗
Granted: May 17, 1994
Filed: Jul 23, 1990
Inventor
John K. Junkers
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.