Granted Patent
Utility
US 5,008,772 · App. 07/587,072
Telephone circuit protector module having plural circuit grounding means
Inventors:
Helmuth Neuwirth, Carl H. Meyerhoefer, William V. Carney, Peter Visconti
Patented Case
View Patent ↗
Granted: Apr 16, 1991
Filed: Sep 24, 1990
Inventors
Helmuth Neuwirth
Carl H. Meyerhoefer
William V. Carney
Peter Visconti
Assignee (at issue)
Porta Systems 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.