Granted Patent
Utility
US 4,864,330 · App. 07/303,971
Method of forming a hot melt ink unit
Inventors:
Linda T. Creagh, Charles W. Spehrley, Jr., Nathan P. Hine, Dean H. Cranston, Jack B. MacDonald
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Feb 1, 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.