Granted Patent
Utility
US 4,404,722 · App. 06/258,566
Apparatus for forming a space section in a pair of continuous slide fastener stringers
Inventor:
Hideo Shimai
Patented Case
View Patent ↗
Granted: Sep 20, 1983
Filed: Apr 29, 1981
Inventor
Hideo Shimai
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.