Granted Patent
Utility
US 4,990,491 · App. 07/212,842
Insulation for superconductors
Inventors:
George R. Wagner, Adolphus Patterson
Patented Case
View Patent ↗
Granted: Feb 5, 1991
Filed: Jun 29, 1988
Inventors
George R. Wagner
Adolphus Patterson
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.