Granted Patent
Utility
US 6,800,021 · App. 09/783,878
End face polishing apparatus
Inventors:
Koji Minami, Junji Taira
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: Feb 15, 2001
Inventors
Koji Minami
Junji Taira
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.