Granted Patent
Utility
US 5,644,561 · App. 08/628,938
Method of discerning disc in compact disc drive
Inventors:
Woog-Ig Son, Ki-bong Yun
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Apr 8, 1996
Inventors
Woog-Ig Son
Ki-bong Yun
Assignee (at issue)
SAMSUNG DISPLAY CO., LTD.
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.