Granted Patent
Utility
US 4,947,192 · App. 07/336,624
Monolithic silicon integrated circuit chip for a thermal ink jet printer
Inventors:
William G. Hawkins, Cathie J. Burke
Patented Case
View Patent ↗
Granted: Aug 7, 1990
Filed: Apr 7, 1989
Inventors
William G. Hawkins
Cathie J. Burke
Assignee (at issue)
Xerox 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.