Granted Patent
Utility
US 4,475,830 · App. 06/405,633
Spliceless ribbon structure having leader and trailer and method of manufacture therefor
Inventor:
John O. Schaefer
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Aug 5, 1982
Inventor
John O. Schaefer
Assignee (at issue)
International Business Machines 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.