Granted Patent
Utility
US 6,817,931 · App. 10/199,822
End face polishing apparatus
Inventor:
Kouji Minami
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Jul 19, 2002
Inventor
Kouji Minami
Assignee (at issue)
SEIKO INSTRUMENTS INC.
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.