Granted Patent
Utility
US 5,016,455 · App. 07/535,334
Key unlocking and retaining method and apparatus
Inventor:
Thomas Hennessy
Patented Case
View Patent ↗
Granted: May 21, 1991
Filed: Jun 8, 1990
Inventor
Thomas Hennessy
Assignee (at issue)
Lori 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.