Granted Patent
Utility
US 6,469,747 · App. 09/389,150
Parabolic mixer for video signals
Inventors:
Sanjay Devappa Rai, Joel D. Gibson
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Sep 2, 1999
Inventors
Sanjay Devappa Rai
Joel D. Gibson
Assignee (at issue)
Da Vinco 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.