Granted Patent
Utility
US 5,170,431 · App. 07/763,119
Electronic bolt lock with enhanced security features
Inventors:
Gerald L. Dawson, Daniel L. Thompson
Patented Case
View Patent ↗
Granted: Dec 8, 1992
Filed: Sep 20, 1991
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.