Granted Patent
Utility
US 6,724,136 · App. 09/639,119
Shadow mask for color cathode-ray tube
Inventors:
Sung Dae Kim, Sang Hu Park
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Aug 16, 2000
Inventors
Sung Dae Kim
Sang Hu Park
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.