Granted Patent
Utility
US 4,662,651 · App. 06/739,847
Document protection using multicolor characters
Inventor:
William H. Mowry, Jr.
Patented Case
View Patent ↗
Granted: May 5, 1987
Filed: May 31, 1985
Inventor
William H. Mowry, Jr.
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.