Granted Patent
Utility
US 5,619,383 · App. 08/441,392
Method and apparatus for reading and writing audio and digital data on a magnetic tape
Inventor:
Hing Y. Ngai
Patented Case
View Patent ↗
Granted: Apr 8, 1997
Filed: May 5, 1995
Inventor
Hing Y. Ngai
Assignee (at issue)
Gemstar Development Corporation
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.