Granted Patent
Utility
US 4,810,119 · App. 07/115,453
Resistive ribbon for high resolution printing
Inventors:
Ali Afzali-Ardakani, Ronald T. Cannavaro, Walter Crooks, Mukesh Desai, Keith S. Pennington, Jean-Piet Hoekstra, Eva E. Simonyi
Patented Case
View Patent ↗
Granted: Mar 7, 1989
Filed: Oct 30, 1987
Inventors
Ali Afzali-Ardakani
Ronald T. Cannavaro
Walter Crooks
Mukesh Desai
Keith S. Pennington
Jean-Piet Hoekstra
Eva E. Simonyi
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.