Granted Patent
Utility
US 4,392,291 · App. 06/298,094
Method for assembling slide fastener stringers
Inventor:
Kenichiro Iai
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: Aug 31, 1981
Inventor
Kenichiro Iai
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.