Granted Patent
Utility
US 5,944,881 · App. 08/900,732
Tri-component security numbering ink
Inventors:
Rajendra Mehta, Gary Doll, Richard L. Shields
Patented Case
View Patent ↗
Granted: Aug 31, 1999
Filed: Jul 25, 1997
Inventors
Rajendra Mehta
Gary Doll
Richard L. Shields
Assignee (at issue)
Standard Register, 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.