Granted Patent
Utility
US 4,875,266 · App. 07/072,438
Releasable high torque fastener
Inventor:
Ronald W. Batten
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: Jul 13, 1987
Inventor
Ronald W. Batten
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.