Granted Patent
Utility
US 4,858,284 · App. 07/182,174
Separable bottom end stop for slide fastener
Inventor:
Eiichi Yoshimura
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Apr 15, 1988
Inventor
Eiichi Yoshimura
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.