Granted Patent
Utility
US 4,864,328 · App. 07/240,948
Dual mode ink jet printer
Inventor:
Kenneth H. Fischbeck
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Sep 6, 1988
Inventor
Kenneth H. Fischbeck
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.