Granted Patent
Utility
US 6,660,422 · App. 09/882,750
Proton exchange membrane fuel cell external manifold seal
Inventors:
Myron Krasij, Bryan F. Dufner, Ronald G. Martin
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Jun 15, 2001
Inventors
Myron Krasij
Bryan F. Dufner
Ronald G. Martin
Assignee (at issue)
UTC Fuel Cells, LLC
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.