Granted Patent
Utility
US 4,391,022 · App. 06/239,573
Automatic lock slider for slide fasteners
Inventor:
Kiyoshi Oda
Patented Case
View Patent ↗
Granted: Jul 5, 1983
Filed: Mar 2, 1981
Inventor
Kiyoshi Oda
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.