Granted Patent
Utility
US 5,889,569 · App. 08/594,233
Device used for liquid crystal display
Inventors:
Mamoru Okamoto, Takahiko Watanabe
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Feb 23, 1996
Inventors
Mamoru Okamoto
Takahiko Watanabe
Assignee (at issue)
NEC 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.