Granted Patent
Utility
US 4,408,137 · App. 06/331,408
Break-before-make solid state relay
Inventor:
David A. Fox
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: Dec 16, 1981
Inventor
David A. Fox
Assignee (at issue)
Westinghouse Electric Company LLC
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.