Granted Patent
Utility
US 4,480,152 · App. 06/352,748
Methods and apparatus for protecting line relay contacts in a telephone switching system
Inventor:
Raymond G. Taylor
Patented Case
View Patent ↗
Granted: Oct 30, 1984
Filed: Feb 26, 1982
Inventor
Raymond G. Taylor
Assignee (at issue)
Western Electric Company, Inc.
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.