Granted Patent
Utility
US 4,875,323 · App. 07/154,669
Packaging machine jamming detector
Inventor:
Jimmy R. Craighead
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: Feb 9, 1988
Inventor
Jimmy R. Craighead
Assignee (at issue)
Manville Corporation
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.