Granted Patent
Utility
US 5,344,713 · App. 07/922,423
Method for manufacturing steel wire material for reinforcing optical fiber
Inventors:
Teruyuki Murai, Susumu Yamamoto
Patented Case
View Patent ↗
Granted: Sep 6, 1994
Filed: Jul 31, 1992
Inventors
Teruyuki Murai
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.