Granted Patent
Utility
US 5,699,090 · App. 08/332,326
Out of ink detector for a thermal inkjet printer
Inventors:
John M. Wade, Dean C Bayerle
Patented Case
View Patent ↗
Granted: Dec 16, 1997
Filed: Oct 31, 1994
Inventors
John M. Wade
Dean C Bayerle
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.