Granted Patent
Utility
US 5,801,649 · App. 08/817,865
Matched spectral null encoder/decoder
Inventor:
Lisa Fredrickson
Patented Case
View Patent ↗
Granted: Sep 1, 1998
Filed: Apr 21, 1997
Inventor
Lisa Fredrickson
Assignee (at issue)
Seagate Technology 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.