Granted Patent
Utility
US 4,590,648 · App. 06/603,747
Slider for slide fastener
Inventors:
Hiroshi Yoshida, Susumu Ishii
Patented Case
View Patent ↗
Granted: May 27, 1986
Filed: Apr 25, 1984
Inventors
Hiroshi Yoshida
Susumu Ishii
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.