Granted Patent
Utility
US 5,020,347 · App. 07/476,817
Key safe apparatus
Inventor:
Karl P. Logan
Patented Case
View Patent ↗
Granted: Jun 4, 1991
Filed: Feb 7, 1990
Inventor
Karl P. Logan
Assignee (at issue)
One Way Out, 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.