Granted Patent
Utility
US 4,904,044 · App. 07/241,606
Continuously variable fiber optic attenuator
Inventor:
Thomas W. Tamulevich
Patented Case
View Patent ↗
Granted: Feb 27, 1990
Filed: Sep 8, 1988
Inventor
Thomas W. Tamulevich
Assignee (at issue)
Light Control Systems, 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.