Granted Patent
Utility
US 5,216,694 · App. 07/758,142
Trellis coding for fractional bits
Inventor:
Lee-Fang Wei
Patented Case
View Patent ↗
Granted: Jun 1, 1993
Filed: Sep 12, 1991
Inventor
Lee-Fang Wei
Assignee (at issue)
AT&T Bell Laboratories
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.