Granted Patent
Utility
US 4,675,950 · App. 06/853,699
Slide fastener suitable for use on articles made of plastics material
Inventor:
Yoshitoki Tsubokawa
Patented Case
View Patent ↗
Granted: Jun 30, 1987
Filed: Apr 18, 1986
Inventor
Yoshitoki Tsubokawa
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.