Granted Patent
Utility
US 5,454,399 · App. 08/043,679
Application and release magnet valve
Inventors:
Michael V. Kazakis, Padmanab L. Gowda, Richard M. Hisker
Patented Case
View Patent ↗
Granted: Oct 3, 1995
Filed: Apr 8, 1993
Inventors
Michael V. Kazakis
Padmanab L. Gowda
Richard M. Hisker
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.