Granted Patent
Utility
US 4,626,632 · App. 06/760,055
Maintenance termination unit
Inventor:
Thomas Mazz
Patented Case
View Patent ↗
Granted: Dec 2, 1986
Filed: Jul 25, 1985
Inventor
Thomas Mazz
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.