Granted Patent
Utility
US 5,836,571 · App. 08/896,464
Disc diaphragm for an intergrated cock valve
Inventors:
Lawrence R. Streitman, Lawrence M. Kushnir, Jr., Ronald M. Markos
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Jul 18, 1997
Inventors
Lawrence R. Streitman
Lawrence M. Kushnir, Jr.
Ronald M. Markos
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.