Granted Patent
Utility
US 4,530,138 · App. 06/429,594
Method of making a transducer assembly
Inventor:
Catharine A. Ritter
Patented Case
View Patent ↗
Granted: Jul 23, 1985
Filed: Sep 30, 1982
Inventor
Catharine A. Ritter
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.