Granted Patent
Utility
US 6,627,005 · App. 09/530,451
High fatigue-strength steel wire and spring, and processes for producing these
Inventors:
Nozomu Kawabe, Teruyuki Murai
Patented Case
View Patent ↗
Granted: Sep 30, 2003
Filed: May 1, 2000
Inventors
Nozomu Kawabe
Teruyuki Murai
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.