Granted Patent
Utility
US 4,998,422 · App. 07/400,817
Removable core padlock with bolt retainer
Inventors:
James W. Borgmann, William R. Foshee
Patented Case
View Patent ↗
Granted: Mar 12, 1991
Filed: Aug 30, 1989
Inventors
James W. Borgmann
William R. Foshee
Assignee (at issue)
Best Lock Corporation
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.