Granted Patent
Utility
US 4,825,730 · App. 07/102,914
Fluid operated wrench
Inventor:
John K. Junkers
Patented Case
View Patent ↗
Granted: May 2, 1989
Filed: Sep 29, 1987
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.