Granted Patent
Utility
US 6,442,986 · App. 09/287,981
Electronic token and lock core
Inventors:
Roger Keith Russell, James Edmond Beylotte, Ralph P. Palmer
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Apr 7, 1999
Inventors
Roger Keith Russell
James Edmond Beylotte
Ralph P. Palmer
Assignee (at issue)
Best Lock Corporation
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.