Granted Patent
Utility
US 4,237,604 · App. 06/034,170
Apparatus for pairing two rows of slide fastener coupling elements
Inventors:
Mitsuo Sawada, Toyoo Morita
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Apr 27, 1979
Inventors
Mitsuo Sawada
Toyoo Morita
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.