Granted Patent
Utility
US 4,557,616 · App. 06/561,010
Resistive ribbon thermal transfer printing system and process
Inventors:
Derek B. Dove, Claus D. Makowka, Ramon L. Street
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: Dec 12, 1983
Inventors
Derek B. Dove
Claus D. Makowka
Ramon L. Street
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.