Granted Patent
Utility
US 5,561,997 · App. 08/426,429
Electromagnetic lock for cylindrical lock barrel
Inventor:
Sheldon Milman
Patented Case
View Patent ↗
Granted: Oct 8, 1996
Filed: Apr 20, 1995
Inventor
Sheldon Milman
Assignee (at issue)
Marlok Company
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.