Granted Patent
Utility
US 4,580,326 · App. 06/503,052
Method and apparatus for automatically threading separable slide fastener stringers through sliders
Inventors:
Koichi Kawakami, Mitsuo Sawada
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Jun 10, 1983
Inventors
Koichi Kawakami
Mitsuo Sawada
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.