Granted Patent
Utility
US 4,485,532 · App. 06/300,670
Separable slide fastener
Inventors:
Hiroshi Yoshida, Shunji Akashi, Yoshio Matsuda
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Sep 9, 1981
Inventors
Hiroshi Yoshida
Shunji Akashi
Yoshio 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.