Granted Patent
Utility
US 4,889,470 · App. 07/226,705
Compressor diaphragm assembly
Inventor:
Augustine J. Scalzo
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Aug 1, 1988
Inventor
Augustine J. Scalzo
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.