Granted Patent
Utility
US 4,597,418 · App. 06/669,771
Woven slide fastener
Inventor:
Masaatsu Ofusa
Patented Case
View Patent ↗
Granted: Jul 1, 1986
Filed: Nov 9, 1984
Inventor
Masaatsu Ofusa
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.