Granted Patent
Utility
US 4,617,844 · App. 06/702,959
Removable key for wrenching tool
Inventor:
Ronald W. Batten
Patented Case
View Patent ↗
Granted: Oct 21, 1986
Filed: Feb 19, 1985
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.