Granted Patent
Utility
US 5,278,870 · App. 07/684,395
Reducing interference in r.f. signals
Inventors:
Len Mays, Edmund P. Darbyshire
Patented Case
View Patent ↗
Granted: Jan 11, 1994
Filed: Apr 12, 1991
Inventors
Len Mays
Edmund P. Darbyshire
Assignee (at issue)
GEC-Marconi 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.