Granted Patent
Utility
US 4,550,477 · App. 06/566,997
Apparatus for forming and planting slide fastener elements
Inventor:
Kenichiro Iai
Patented Case
View Patent ↗
Granted: Nov 5, 1985
Filed: Dec 30, 1983
Inventor
Kenichiro Iai
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.