Granted Patent
Utility
US 4,845,829 · App. 07/219,608
Method of manufacturing separable slide fastener
Inventor:
Yusei Sassa
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Jul 15, 1988
Inventor
Yusei Sassa
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.