Granted Patent
Utility
US 5,844,639 · App. 08/727,220
Plasma addressed liquid crystal display device
Inventor:
Takahiro Togawa
Patented Case
View Patent ↗
Granted: Dec 1, 1998
Filed: Oct 8, 1996
Inventor
Takahiro Togawa
Assignee (at issue)
SONY GROUP 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.