Granted Patent
Utility
US 5,437,219 · App. 08/145,112
Low stress conical type diaphragm
Inventors:
Daniel G. Scott, William K. Mong, Willard P. Spalding
Patented Case
View Patent ↗
Granted: Aug 1, 1995
Filed: Nov 3, 1993
Inventors
Daniel G. Scott
William K. Mong
Willard P. Spalding
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.