Granted Patent
Utility
US 5,677,074 · App. 08/673,661
Gas diffusion electrode
Inventors:
Joseph M. Serpico, Scott G. Ehrenberg, Gary Wnek, Timothy Tangredi
Patented Case
View Patent ↗
Granted: Oct 14, 1997
Filed: Jun 25, 1996
Inventors
Joseph M. Serpico
Scott G. Ehrenberg
Gary Wnek
Timothy Tangredi
Assignee (at issue)
Dais Corporation
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.