Granted Patent
Utility
US 4,342,039 · App. 06/227,863
High resolution magnetic printing head
Inventor:
Jish M. Wang
Patented Case
View Patent ↗
Granted: Jul 27, 1982
Filed: Jan 23, 1981
Inventor
Jish M. Wang
Assignee (at issue)
General Electric Company
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.