Granted Patent
Utility
US 4,246,555 · App. 05/926,056
Odd order elliptic function narrow band-pass microwave filter
Inventor:
Albert E. Williams
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Jul 19, 1978
Inventor
Albert E. Williams
Assignee (at issue)
Communications Satellite 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.