Granted Patent
Utility
US 6,280,293 · App. 09/418,979
End face polishing apparatus and method for polishing end face of ferrule
Inventors:
Kouji Minami, Mari Kato, Masaharu Sugiyama
Patented Case
View Patent ↗
Granted: Aug 28, 2001
Filed: Oct 14, 1999
Inventors
Kouji Minami
Mari Kato
Masaharu Sugiyama
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.