Granted Patent
Utility
US 5,488,660 · App. 08/416,455
Electronic combination lock utilizing a one-time use combination
Inventors:
Gerald L. Dawson, Daniel L. Thompson
Patented Case
View Patent ↗
Granted: Jan 30, 1996
Filed: Apr 3, 1995
Inventors
Gerald L. Dawson
Daniel L. Thompson
Assignee (at issue)
Mas-Hamilton Group, 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.