Granted Patent
Utility
US 4,334,232 · App. 06/168,472
Laminated charge plate for an ink jet printing device and method of manufacturing same
Inventor:
Donald L. Head
Patented Case
View Patent ↗
Granted: Jun 8, 1982
Filed: Jul 14, 1980
Inventor
Donald L. Head
Assignee (at issue)
The Mead 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.