Granted Patent
Utility
US 4,290,194 · App. 06/090,136
Apparatus for interengaging opposed rows of slide fastener coupling elements
Inventor:
Kihei Takahashi
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Nov 1, 1979
Inventor
Kihei Takahashi
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.