Granted Patent
Utility
US 5,003,322 · App. 07/379,918
Holt melt ink supply unit
Inventors:
Linda T. Creagh, Charles W. Spehrley, Jr., Nathan P. Hine, Dean H. Cranston, Jack B. MacDonald
Patented Case
View Patent ↗
Granted: Mar 26, 1991
Filed: Jul 14, 1989
Inventors
Linda T. Creagh
Charles W. Spehrley, Jr.
Nathan P. Hine
Dean H. Cranston
Jack B. MacDonald
Assignee (at issue)
Spectra Group Limited, Inc.
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.