Granted Patent
Utility
US 4,240,917 · App. 06/027,639
Transformer using catalytically hydrogenated bright stock fluid
Inventors:
Henry A. Pearce, Jr., Edward J. Walsh
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Apr 6, 1979
Inventors
Henry A. Pearce, Jr.
Edward J. Walsh
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.