Granted Patent
Utility
US 4,944,564 · App. 07/357,567
Brake valve device arranged for electro-pneumatic control
Inventors:
Richard F. Balukin, John R. Reiss, Frank J. Jerina
Patented Case
View Patent ↗
Granted: Jul 31, 1990
Filed: May 26, 1989
Inventors
Richard F. Balukin
John R. Reiss
Frank J. Jerina
Assignee (at issue)
American Standard Inc.
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.