Granted Patent
Utility
US 5,781,329 · App. 08/770,273
Electrochromic display device for optical pick up apparatus
Inventors:
Man Hyung Lee, Kyung Chan Park, Yoon Kwon Lee, Byung Ryu
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: Dec 20, 1996
Inventors
Man Hyung Lee
Kyung Chan Park
Yoon Kwon Lee
Byung Ryu
Assignee (at issue)
LG ELECTRONICS INC.
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.