Granted Patent
Utility
US 5,883,656 · App. 08/356,571
Field effect toning method/apparatus
Inventor:
Orrin D. Christy
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Dec 15, 1994
Inventor
Orrin D. Christy
Assignee (at issue)
Moore Business Forms, 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.