Granted Patent
Utility
US 4,530,600 · App. 06/351,028
Variable attenuator for optical transceiver
Inventor:
Marco Lopez
Patented Case
View Patent ↗
Granted: Jul 23, 1985
Filed: Feb 22, 1982
Inventor
Marco Lopez
Assignee (at issue)
Northrop 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.