Granted Patent
Utility
US 6,389,954 · App. 09/444,218
Removable filter plug for spring brake actuator
Inventors:
Savvas Constantinides, Ted Smith
Patented Case
View Patent ↗
Granted: May 21, 2002
Filed: Nov 19, 1999
Inventors
Savvas Constantinides
Ted Smith
Assignee (at issue)
TSE Brakes, 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.