Granted Patent
Utility
US 4,721,022 · App. 06/823,009
Wrenching tool
Inventor:
Ronald W. Batten
Patented Case
View Patent ↗
Granted: Jan 26, 1988
Filed: Jan 27, 1986
Inventor
Ronald W. Batten
Assignee (at issue)
VSI, LLC
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.