Granted Patent
Utility
US 5,592,838 · App. 07/839,174
Anti-attack interlocks for a combination lock mechanism
Inventors:
Thomas R. Clark, Gerald L. Dawson, Paul T. Scherer
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Feb 20, 1992
Inventors
Thomas R. Clark
Gerald L. Dawson
Paul T. Scherer
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.