Granted Patent
Utility
US 4,771,298 · App. 06/908,497
Drop-on-demand print head using gasket fan-in
Inventors:
Francis Chee-Shuen Lee, Ross N. Mills, Horst G. Mossbrugger, Gary V. Sturm
Patented Case
View Patent ↗
Granted: Sep 13, 1988
Filed: Sep 17, 1986
Inventors
Francis Chee-Shuen Lee
Ross N. Mills
Horst G. Mossbrugger
Gary V. Sturm
Assignee (at issue)
International Business Machines 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.