Granted Patent
Utility
US 5,177,855 · App. 07/799,104
Method and apparatus for forming element-free spaces in slide fastener chain
Inventor:
Hideo Shimai
Patented Case
View Patent ↗
Granted: Jan 12, 1993
Filed: Nov 27, 1991
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.