Granted Patent
Utility
US 6,736,551 · App. 10/187,574
End face polishing apparatus
Inventors:
Kazuhiko Arai, Kouji Minami
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: Jul 2, 2002
Inventors
Kazuhiko Arai
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.