Granted Patent
Utility
US 4,438,550 · App. 06/356,232
Lockable slider for slide fasteners
Inventor:
Kiyoshi Oda
Patented Case
View Patent ↗
Granted: Mar 27, 1984
Filed: Mar 8, 1982
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.