Granted Patent
Utility
US 5,684,664 · App. 08/585,573
Method for the production of an insulator
Inventors:
Elias Julke, Walter Schmidt
Patented Case
View Patent ↗
Granted: Nov 4, 1997
Filed: Jan 16, 1996
Inventors
Elias Julke
Walter Schmidt
Assignee (at issue)
Asea Brown Boveri, S.A.
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.