Granted Patent
Utility
US 4,420,839 · App. 06/363,634
Hybrid ring having improved bandwidth characteristic
Inventor:
John Hogerheiden, Jr.
Patented Case
View Patent ↗
Granted: Dec 13, 1983
Filed: Mar 30, 1982
Inventor
John Hogerheiden, Jr.
Assignee (at issue)
Bunker Ramo-Eltra 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.