Granted Patent
Utility
US 4,520,371 · App. 06/454,917
Multi-zone thermal print head
Inventors:
Rowland V. D. Firth, III, Willie Goff, Jr., Ta C. Ku, James M. Rakes
Patented Case
View Patent ↗
Granted: May 28, 1985
Filed: Dec 30, 1982
Inventors
Rowland V. D. Firth, III
Willie Goff, Jr.
Ta C. Ku
James M. Rakes
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.