Granted Patent
Utility
US 4,801,231 · App. 07/036,785
Self-driven nut and joinders incorporating it
Inventor:
Michael R. Everman
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Apr 10, 1987
Inventor
Michael R. Everman
Assignee (at issue)
AEC-Able Engineering Co., Inc.
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.