Granted Patent
Utility
US 4,667,272 · App. 06/799,309
Replacement protector block for telephone circuits
Inventor:
Michael Fasano
Patented Case
View Patent ↗
Granted: May 19, 1987
Filed: Nov 18, 1985
Inventor
Michael Fasano
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.