Granted Patent
Utility
US 5,263,388 · App. 07/989,465
Power wrench
Inventor:
Karl Beuke
Patented Case
View Patent ↗
Granted: Nov 23, 1993
Filed: Dec 10, 1992
Inventor
Karl Beuke
Assignee (at issue)
Paul Wagner
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.