Granted Patent
Utility
US 5,646,812 · App. 08/510,897
Telephone line surge protector module with fast-acting, high resistance heat coil assembly
Inventor:
William Hernandez
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Aug 28, 1995
Inventor
William Hernandez
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.