Granted Patent
Utility
US 4,201,099 · App. 05/933,134
Hydraulic wrench
Inventor:
John K. Junkers
Patented Case
View Patent ↗
Granted: May 6, 1980
Filed: Aug 14, 1978
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.