Granted Patent
Utility
US 4,863,551 · App. 07/228,540
Marking apparatus
Inventor:
Toyosaku Ogura
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Aug 5, 1988
Inventor
Toyosaku Ogura
Assignee (at issue)
Yoshido 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.