Granted Patent
Utility
US 4,839,956 · App. 07/184,897
Method of and apparatus for attaching top stops to slide fastener chain
Inventor:
Tatsuo Osaki
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Apr 22, 1988
Inventor
Tatsuo Osaki
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.