Granted Patent
Utility
US 6,000,433 · App. 08/794,302
Precision filtered choke
Inventors:
John B. Carroll, Michael McNeil, Gary M. Sich
Patented Case
View Patent ↗
Granted: Dec 14, 1999
Filed: Feb 3, 1997
Inventors
John B. Carroll
Michael McNeil
Gary M. Sich
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.