Granted Patent
Utility
US 4,562,621 · App. 06/582,556
Slide fastener stringer
Inventors:
Kiyoshi Takeshima, Ryukichi Murai, Yoshinori Nakada
Patented Case
View Patent ↗
Granted: Jan 7, 1986
Filed: Feb 22, 1984
Inventors
Kiyoshi Takeshima
Ryukichi Murai
Yoshinori Nakada
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.