Granted Patent
Utility
US 5,692,041 · App. 08/330,540
Telephone subscriber circuit with galvanic isolation
Inventor:
Aldo Torazzina
Patented Case
View Patent ↗
Granted: Nov 25, 1997
Filed: Oct 27, 1994
Inventor
Aldo Torazzina
Assignee (at issue)
SGS-Thomson Microelectronics S.A.
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.