Granted Patent
Utility
US 5,989,732 · App. 08/921,342
Stainless steel wire and producing method thereof
Inventor:
Susumu Yamamoto
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Aug 29, 1997
Inventor
Susumu Yamamoto
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.
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.