Granted Patent
Utility
US 4,615,668 · App. 06/668,494
Apparatus for melt-forming bottom stop of slide fastener chain
Inventor:
Yasuhiko Matsuda
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Nov 5, 1984
Inventor
Yasuhiko Matsuda
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.