Granted Patent
Utility
US 5,257,515 · App. 07/951,848
Stringer for a concealed type of slide fastener
Inventor:
Yoshito Ikeguchi
Patented Case
View Patent ↗
Granted: Nov 2, 1993
Filed: Sep 28, 1992
Inventor
Yoshito Ikeguchi
Assignee (at issue)
Yoshida Kogyo K.K.
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.