Granted Patent
Utility
US 4,489,299 · App. 06/461,795
Secondary circuit breaker for distribution transformer
Inventors:
Raymond E. Wien, Jack G. Hanks, John F. Cotton
Patented Case
View Patent ↗
Granted: Dec 18, 1984
Filed: Jan 28, 1983
Inventors
Raymond E. Wien
Jack G. Hanks
John F. Cotton
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.