Granted Patent
Utility
US 4,477,198 · App. 06/388,554
Modified resistive layer in thermal transfer medium having lubricating contact graphite coating
Inventors:
Patsy A. Bowlds, David Dunn, Rex D. Fathergill, Hugh T. Findlay
Patented Case
View Patent ↗
Granted: Oct 16, 1984
Filed: Jun 15, 1982
Inventors
Patsy A. Bowlds
David Dunn
Rex D. Fathergill
Hugh T. Findlay
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.