Granted Patent
Utility
US 4,432,126 · App. 06/376,144
Method of and apparatus for manufacturing slide fastener coupling elements
Inventor:
Sadanobu Sugahara
Patented Case
View Patent ↗
Granted: Feb 21, 1984
Filed: May 7, 1982
Inventor
Sadanobu Sugahara
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.