Granted Patent
Utility
US 4,586,220 · App. 06/712,146
Separable slide fastener
Inventors:
Toyosaku Ogura, Seiji Nishino
Patented Case
View Patent ↗
Granted: May 6, 1986
Filed: Mar 15, 1985
Inventors
Toyosaku Ogura
Seiji Nishino
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.