Granted Patent
Utility
US 4,331,518 · App. 06/223,713
Bismuth composition, method of electroplating a tin-bismuth alloy and electroplating bath therefor
Inventor:
Harold P. Wilson
Patented Case
View Patent ↗
Granted: May 25, 1982
Filed: Jan 9, 1981
Inventor
Harold P. Wilson
Assignee (at issue)
Vulcan Materials Company
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.