Granted Patent
Utility
US 5,065,491 · App. 07/420,359
Method for producing curved slide fastener chains and method for producing curved slide fasteners
Inventor:
Shigeki Takada
Patented Case
View Patent ↗
Granted: Nov 19, 1991
Filed: Oct 12, 1989
Inventor
Shigeki Takada
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.