Granted Patent
Utility
US 5,543,852 · App. 08/265,709
Apparatus and methods for avoiding loss of closed caption data when using extended data services
Inventors:
Henry C. Yuen, Daniel S. Kwoh, Wing P. Leung, Tony TAM
Patented Case
View Patent ↗
Granted: Aug 6, 1996
Filed: Jun 24, 1994
Inventors
Henry C. Yuen
Daniel S. Kwoh
Wing P. Leung
Tony TAM
Assignee (at issue)
INDEX SYSTEMS, LLC
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.