Granted Patent
Utility
US 4,379,957 · App. 06/224,872
"Modular ""Y""-type enclosure elements for gas insulated substations"
Inventor:
Ben J. Calvino
Patented Case
View Patent ↗
Granted: Apr 12, 1983
Filed: Jan 14, 1981
Inventor
Ben J. Calvino
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.