Granted Patent
Utility
US 4,789,089 · App. 07/072,752
Automatic fastener assembling machine
Inventor:
Sumio Toyota
Patented Case
View Patent ↗
Granted: Dec 6, 1988
Filed: Jul 13, 1987
Inventor
Sumio Toyota
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.