Granted Patent
Utility
US 5,405,577 · App. 08/225,826
Lead-free and bismuth-free tin alloy solder composition
Inventors:
Karl Seelig, Donald G. Lockard
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: Apr 11, 1994
Inventors
Karl Seelig
Donald G. Lockard
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.