Granted Patent
Utility
US 4,424,708 · App. 06/339,748
Fuel cell leak detector
Inventor:
Gaston Meuleman
Patented Case
View Patent ↗
Granted: Jan 10, 1984
Filed: Jan 15, 1982
Inventor
Gaston Meuleman
Assignee (at issue)
Northrop 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.