Granted Patent
Utility
US 5,687,633 · App. 08/677,265
Insert type member for use in a flexible type pump diaphragm
Inventor:
Eldon S. Eady
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Jul 9, 1996
Inventor
Eldon S. Eady
Assignee (at issue)
Westinghouse Air Brake Co.
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.