Granted Patent
Utility
US 5,870,914 · App. 08/851,523
Electronic combination lock with self-contained power generation
Inventor:
Gerald L. Dawson
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: May 7, 1997
Inventor
Gerald L. Dawson
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.