Granted Patent
Utility
US 4,569,609 · App. 06/630,834
Print ribbon comprising a frictional back layer
Inventors:
Donald E. Snyder, Jr., Donald J. Watters, Frank M. Palermiti
Patented Case
View Patent ↗
Granted: Feb 11, 1986
Filed: Jul 13, 1984
Inventors
Donald E. Snyder, Jr.
Donald J. Watters
Frank M. Palermiti
Assignee (at issue)
Burroughs, 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.