Granted Patent
Utility
US 6,678,044 · App. 09/907,032
Monochromator and optical spectrum analyzer equipped with the same
Inventor:
Tsutomu Kaneko
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Jul 17, 2001
Inventor
Tsutomu Kaneko
Assignee (at issue)
Ando Electric 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.