Granted Patent
Utility
US 4,968,960 · App. 07/453,741
Electromagnet relay with flux biasing
Inventors:
Redjem Bouhenguel, Shan C. Sun
Patented Case
View Patent ↗
Granted: Nov 6, 1990
Filed: Dec 20, 1989
Inventors
Redjem Bouhenguel
Shan C. Sun
Assignee (at issue)
ABB Power T&D 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.