Granted Patent
Utility
US 5,146,243 · App. 07/737,943
Diaphragm cap system for ink-jet printers
Inventors:
Kris M. English, J. Paul Harmon, Jefferson P. Ward
Patented Case
View Patent ↗
Granted: Sep 8, 1992
Filed: Jul 29, 1991
Inventors
Kris M. English
J. Paul Harmon
Jefferson P. Ward
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.