Granted Patent
Utility
US 6,080,685 · App. 08/951,682
Abrasion resistant plastic bonded to a diaphragm
Inventor:
Eldon S. Eady
Patented Case
View Patent ↗
Granted: Jun 27, 2000
Filed: Oct 16, 1997
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.