Granted Patent
Utility
US 6,747,778 · App. 10/239,382
Method and apparatus for generating a pulse width modulated signal and optical attenuator controlled by a pulse width modulated signal
Inventors:
Roger Brown, Earl A Dennis, Darren Vass, Graham Butler, Michael Leach
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: Feb 4, 2003
Inventors
Roger Brown
Earl A Dennis
Darren Vass
Graham Butler
Michael Leach
Assignee (at issue)
Marconi Communications GmbH
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.