Granted Patent
Utility
US 4,572,661 · App. 06/412,618
Tester for a copier
Inventor:
Christopher King
Patented Case
View Patent ↗
Granted: Feb 25, 1986
Filed: Aug 30, 1982
Inventor
Christopher King
Assignee (at issue)
Monroe Systems for Business, 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.