Granted Patent
Utility
US 5,727,993 · App. 08/555,763
Plastic flexible grinding stone
Inventor:
Tadao Kodate
Patented Case
View Patent ↗
Granted: Mar 17, 1998
Filed: Nov 9, 1995
Inventor
Tadao Kodate
Assignee (at issue)
Joybond Co., Ltd.
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.