Granted Patent
Utility
US 5,825,569 · App. 08/597,312
Constant-density magnetic disc apparatus and magnetic disc used therefor
Inventors:
Jin Seok Kim, Jae-Deog Joo
Patented Case
View Patent ↗
Granted: Oct 20, 1998
Filed: Feb 6, 1996
Inventors
Jin Seok Kim
Jae-Deog Joo
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.