Granted Patent
Utility
US 6,689,490 · App. 10/371,894
Display element for employment in a magnetic anti-theft security system
Inventors:
Hartwin Weber, Gernot Hausch, Ottmar Roth
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Feb 21, 2003
Inventors
Hartwin Weber
Gernot Hausch
Ottmar Roth
Assignee (at issue)
Vacuumschmelze GmbH & Co. KG
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.