Granted Patent
Utility
US 5,156,925 · App. 07/773,511
Hydrogen removal system for metal/air cell
Inventor:
Steven P. Lapp
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: Oct 9, 1991
Inventor
Steven P. Lapp
Assignee (at issue)
Alcan International Limited
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.