Granted Patent
Utility
US 4,835,776 · App. 07/073,532
Communication filter
Inventor:
Kadiresan Annamalai
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Jul 15, 1987
Inventor
Kadiresan Annamalai
Assignee (at issue)
Advanced Micro Devices, 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.