Granted Patent
Utility
US 6,747,607 · App. 07/172,120
Radiation power limiter
Inventors:
Wilfried O. Eckhardt, Weldon S. Williamson
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: Feb 12, 1988
Inventors
Wilfried O. Eckhardt
Weldon S. Williamson
Assignee (at issue)
DIRECTV, LLC
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.