Granted Patent
Utility
US 5,648,740 · App. 08/538,968
Switching arrangement with combined attenuation and selection stage
Inventors:
Liam Michael Devlin, Brian Jeffrey Buck
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Oct 5, 1995
Inventors
Liam Michael Devlin
Brian Jeffrey Buck
Assignee (at issue)
GEC-Marconi Ltd.
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.