Granted Patent
Utility
US 4,983,136 · App. 07/371,034
Method of forming an electron reflecting coat on CRT shadow masks
Inventor:
Hiroshi Okuda
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Jun 26, 1989
Inventor
Hiroshi Okuda
Assignee (at issue)
MITSUBISHI ELECTRIC 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.