Granted Patent
Utility
US 6,787,263 · App. 10/421,568
Method and apparatus for establishing a negative pressure inside an enclosure that houses a fuel cell system
Inventors:
Michael M. Walsh, Robert S. Traver, Russel Hugh Marvin, George M. Allen
Patented Case
View Patent ↗
Granted: Sep 7, 2004
Filed: Apr 23, 2003
Inventors
Michael M. Walsh
Robert S. Traver
Russel Hugh Marvin
George M. Allen
Assignee (at issue)
Plug Power 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.