Granted Patent
Utility
US 4,306,902 · App. 06/179,603
Process for the production of elemental silver from silver chloride or silver sulphate
Inventor:
Wasyl Kunda
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Aug 19, 1980
Inventor
Wasyl Kunda
Assignee (at issue)
Sherritt Gordon Mines 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.