Granted Patent
Utility
US 4,648,293 · App. 06/502,980
Locknut and key therefor
Inventor:
Lewis D. McCauley
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Jun 10, 1983
Inventor
Lewis D. McCauley
Assignee (at issue)
McGard 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.